102490225 has 12 divisors (see below), whose sum is σ = 127214080. Its totient is φ = 81910800.

The previous prime is 102490207. The next prime is 102490249. The reversal of 102490225 is 522094201.

It is not a de Polignac number, because 102490225 - 2⁹ = 102489713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 102490225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44656 + ... + 46894.

Almost surely, 2^102490225 is an apocalyptic number.

It is an amenable number.

102490225 is a deficient number, since it is larger than the sum of its proper divisors (24723855).

102490225 is a wasteful number, since it uses less digits than its factorization.

102490225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080 (or 4075 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 102490225 is about 10123.7456013078. The cubic root of 102490225 is about 467.9802037673.

The spelling of 102490225 in words is "one hundred two million, four hundred ninety thousand, two hundred twenty-five".