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10242452025 = 34521321732
BaseRepresentation
bin10011000100111111…
…10110101000111001
3222102210222110210000
421202133312220321
5131434031431100
64412203143213
7511550256111
oct114237665071
928383873700
1010242452025
114386662893
121b9a214b09
13c72cb9400
146d2436041
153ee300900
hex2627f6a39

10242452025 has 135 divisors (see below), whose sum is σ = 20663692599. Its totient is φ = 5013290880.

The previous prime is 10242451969. The next prime is 10242452039. The reversal of 10242452025 is 52025424201.

The square root of 10242452025 is 101205.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 5656995369 + 4585456656 = 75213^2 + 67716^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 10242452025 - 27 = 10242451897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10242452025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 59204839 + ... + 59205011.

Almost surely, 210242452025 is an apocalyptic number.

10242452025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10242452025 is the 101205-th square number.

10242452025 is the 50603-rd centered octagonal number.

It is an amenable number.

10242452025 is an abundant number, since it is smaller than the sum of its proper divisors (10421240574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10242452025 is an equidigital number, since it uses as much as digits as its factorization.

10242452025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Multiplying 10242452025 by its product of nonzero digits (6400), we get a square (65551692960000 = 80964002).

Adding to 10242452025 its reverse (52025424201), we get a palindrome (62267876226).

It can be divided in two parts, 102424 and 52025, that added together give a square (154449 = 3932).

The spelling of 10242452025 in words is "ten billion, two hundred forty-two million, four hundred fifty-two thousand, twenty-five".

Divisors: 1 3 5 9 13 15 25 27 39 45 65 75 81 117 135 169 173 195 225 325 351 405 507 519 585 675 845 865 975 1053 1521 1557 1755 2025 2249 2535 2595 2925 4225 4325 4563 4671 5265 6747 7605 7785 8775 11245 12675 12975 13689 14013 20241 22815 23355 26325 29237 29929 33735 38025 38925 56225 60723 68445 70065 87711 89787 101205 114075 116775 146185 149645 168675 182169 263133 269361 303615 342225 350325 389077 438555 448935 506025 730925 748225 789399 808083 910845 1167231 1315665 1346805 1518075 1945385 2192775 2244675 2368197 2424249 3501693 3946995 4040415 4554225 5058001 5836155 6578325 6734025 9726925 10505079 11840985 12121245 15174003 17508465 19734975 20202075 25290005 29180775 31515237 45522009 52525395 59204925 60606225 75870015 87542325 126450025 136566027 157576185 227610045 262626975 379350075 409698081 682830135 787880925 1138050225 2048490405 3414150675 10242452025