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489515625 = 3256592
BaseRepresentation
bin11101001011010…
…110101001101001
31021010002222012100
4131023112221221
52000304000000
6120324004013
715062546154
oct3513265151
91233088170
10489515625
11231356375
12117b30609
137a553c21
1449026c9b
152ce96a00
hex1d2d6a69

489515625 has 63 divisors (see below), whose sum is σ = 899070523. Its totient is φ = 256650000.

The previous prime is 489515623. The next prime is 489515627. The reversal of 489515625 is 526515984.

The square root of 489515625 is 22125.

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

489515625 is a `hidden beast` number, since 4 + 8 + 9 + 5 + 15 + 625 = 666.

It is an interprime number because it is at equal distance from previous prime (489515623) and next prime (489515627).

It can be written as a sum of positive squares in 3 ways, for example, as 428862681 + 60652944 = 20709^2 + 7788^2 .

It is not a de Polignac number, because 489515625 - 21 = 489515623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489515623) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 8296846 + ... + 8296904.

Almost surely, 2489515625 is an apocalyptic number.

489515625 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

489515625 is the 22125-th square number.

489515625 is the 11063-rd centered octagonal number.

It is an amenable number.

489515625 is a deficient number, since it is larger than the sum of its proper divisors (409554898).

489515625 is an frugal number, since it uses more digits than its factorization.

489515625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 67 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The cubic root of 489515625 is about 788.1136562293.

The spelling of 489515625 in words is "four hundred eighty-nine million, five hundred fifteen thousand, six hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 59 75 125 177 225 295 375 531 625 885 1125 1475 1875 2655 3125 3481 4425 5625 7375 9375 10443 13275 15625 17405 22125 28125 31329 36875 46875 52215 66375 87025 110625 140625 156645 184375 261075 331875 435125 553125 783225 921875 1305375 1659375 2175625 2765625 3916125 6526875 8296875 10878125 19580625 32634375 54390625 97903125 163171875 489515625