625666704 has 80 divisors (see below), whose sum is σ = 1746679872. Its totient is φ = 191844864.

The previous prime is 625666693. The next prime is 625666711. The reversal of 625666704 is 407666526.

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 15 ways as a sum of consecutive naturals, for example, 196227 + ... + 199389.

Almost surely, 2^625666704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625666704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873339936).

625666704 is an abundant number, since it is smaller than the sum of its proper divisors (1121013168).

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

625666704 is a wasteful number, since it uses less digits than its factorization.

625666704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3498 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 625666704 is about 25013.3305259416. The cubic root of 625666704 is about 855.2918780505.

The spelling of 625666704 in words is "six hundred twenty-five million, six hundred sixty-six thousand, seven hundred four".