625643606 has 8 divisors (see below), whose sum is σ = 1072531920. Its totient is φ = 268132968.

The previous prime is 625643569. The next prime is 625643657. The reversal of 625643606 is 606346526.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 625643606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22344401 + ... + 22344428.

It is an arithmetic number, because the mean of its divisors is an integer number (134066490).

Almost surely, 2^625643606 is an apocalyptic number.

625643606 is a deficient number, since it is larger than the sum of its proper divisors (446888314).

625643606 is a wasteful number, since it uses less digits than its factorization.

625643606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44688838.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 625643606 is about 25012.8688078757. The cubic root of 625643606 is about 855.2813528647.

The spelling of 625643606 in words is "six hundred twenty-five million, six hundred forty-three thousand, six hundred six".