625646525 has 24 divisors (see below), whose sum is σ = 887711040. Its totient is φ = 428492160.

The previous prime is 625646519. The next prime is 625646537. The reversal of 625646525 is 525646526.

It is not a de Polignac number, because 625646525 - 2⁴ = 625646509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190346 + ... + 193604.

It is an arithmetic number, because the mean of its divisors is an integer number (36987960).

Almost surely, 2^625646525 is an apocalyptic number.

It is an amenable number.

625646525 is a deficient number, since it is larger than the sum of its proper divisors (262064515).

625646525 is a wasteful number, since it uses less digits than its factorization.

625646525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373 (or 4368 counting only the distinct ones).

The product of its digits is 432000, while the sum is 41.

The square root of 625646525 is about 25012.9271577718. The cubic root of 625646525 is about 855.2826829949.

Subtracting from 625646525 its reverse (525646526), we obtain a palindrome (99999999).

The spelling of 625646525 in words is "six hundred twenty-five million, six hundred forty-six thousand, five hundred twenty-five".