625012638 has 32 divisors (see below), whose sum is σ = 1358269440. Its totient is φ = 191004480.

The previous prime is 625012637. The next prime is 625012679. The reversal of 625012638 is 836210526.

It is a junction number, because it is equal to n+sod(n) for n = 625012599 and 625012608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625012637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84895 + ... + 91962.

It is an arithmetic number, because the mean of its divisors is an integer number (42445920).

Almost surely, 2^625012638 is an apocalyptic number.

625012638 is an abundant number, since it is smaller than the sum of its proper divisors (733256802).

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

625012638 is a wasteful number, since it uses less digits than its factorization.

625012638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176912.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 625012638 is about 25000.2527587223. The cubic root of 625012638 is about 854.9937361464.

The spelling of 625012638 in words is "six hundred twenty-five million, twelve thousand, six hundred thirty-eight".