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12500152530 = 2351745135431
BaseRepresentation
bin10111010010001000…
…10011000011010010
31012021011020112122020
423221010103003102
5201100014340110
65424213352310
7621523354245
oct135104230322
935234215566
1012500152530
115335012678
12250a338696
131242971178
1486821325c
154d2618d70
hex2e91130d2

12500152530 has 64 divisors (see below), whose sum is σ = 31777982208. Its totient is φ = 3136020480.

The previous prime is 12500152523. The next prime is 12500152531. The reversal of 12500152530 is 3525100521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12500152530.

It is not an unprimeable number, because it can be changed into a prime (12500152531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2298915 + ... + 2304345.

It is an arithmetic number, because the mean of its divisors is an integer number (496530972).

Almost surely, 212500152530 is an apocalyptic number.

12500152530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12500152530 is an abundant number, since it is smaller than the sum of its proper divisors (19277829678).

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

12500152530 is a wasteful number, since it uses less digits than its factorization.

12500152530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9971.

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 12500152530 in words is "twelve billion, five hundred million, one hundred fifty-two thousand, five hundred thirty".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 510 4513 5431 9026 10862 13539 16293 22565 27078 27155 32586 45130 54310 67695 76721 81465 92327 135390 153442 162930 184654 230163 276981 383605 460326 461635 553962 767210 923270 1150815 1384905 2301630 2769810 24510103 49020206 73530309 122550515 147060618 245101030 367651545 416671751 735303090 833343502 1250015253 2083358755 2500030506 4166717510 6250076265 12500152530