625806938 has 4 divisors (see below), whose sum is σ = 938710410. Its totient is φ = 312903468.

The previous prime is 625806919. The next prime is 625806943. The reversal of 625806938 is 839608526.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 474934849 + 150872089 = 21793^2 + 12283^2 .

It is a junction number, because it is equal to n+sod(n) for n = 625806892 and 625806901.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156451733 + ... + 156451736.

Almost surely, 2^625806938 is an apocalyptic number.

625806938 is a deficient number, since it is larger than the sum of its proper divisors (312903472).

625806938 is a wasteful number, since it uses less digits than its factorization.

625806938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312903471.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 625806938 is about 25016.1335541686. The cubic root of 625806938 is about 855.3557736468.

The spelling of 625806938 in words is "six hundred twenty-five million, eight hundred six thousand, nine hundred thirty-eight".