68636625 has 32 divisors (see below), whose sum is σ = 115385088. Its totient is φ = 36230400.

The previous prime is 68636621. The next prime is 68636627. The reversal of 68636625 is 52663686.

It is not a de Polignac number, because 68636625 - 2² = 68636621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68636621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37737 + ... + 39513.

It is an arithmetic number, because the mean of its divisors is an integer number (3605784).

Almost surely, 2^68636625 is an apocalyptic number.

It is an amenable number.

68636625 is a deficient number, since it is larger than the sum of its proper divisors (46748463).

68636625 is a wasteful number, since it uses less digits than its factorization.

68636625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1888 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 68636625 is about 8284.7223852100. The cubic root of 68636625 is about 409.4353221911.

The spelling of 68636625 in words is "sixty-eight million, six hundred thirty-six thousand, six hundred twenty-five".