102525489 has 24 divisors (see below), whose sum is σ = 163612800. Its totient is φ = 61345440.

The previous prime is 102525473. The next prime is 102525517. The reversal of 102525489 is 984525201.

102525489 is a `hidden beast` number, since 102 + 5 + 2 + 548 + 9 = 666.

It is not a de Polignac number, because 102525489 - 2⁴ = 102525473 is a prime.

It is a super-2 number, since 2×102525489² = 21022951789378242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102525089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1267 + ... + 14375.

It is an arithmetic number, because the mean of its divisors is an integer number (6817200).

Almost surely, 2^102525489 is an apocalyptic number.

It is an amenable number.

102525489 is a deficient number, since it is larger than the sum of its proper divisors (61087311).

102525489 is a wasteful number, since it uses less digits than its factorization.

102525489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13205 (or 13202 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 102525489 is about 10125.4870993943. The cubic root of 102525489 is about 468.0338705488.

The spelling of 102525489 in words is "one hundred two million, five hundred twenty-five thousand, four hundred eighty-nine".