2257725656 has 64 divisors (see below), whose sum is σ = 4389228000. Its totient is φ = 1088271360.

The previous prime is 2257725643. The next prime is 2257725667. The reversal of 2257725656 is 6565277522.

It is a self number, because there is not a number n which added to its sum of digits gives 2257725656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9858950 + ... + 9859178.

Almost surely, 2^2257725656 is an apocalyptic number.

It is an amenable number.

2257725656 is a deficient number, since it is larger than the sum of its proper divisors (2131502344).

2257725656 is a wasteful number, since it uses less digits than its factorization.

2257725656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 608 counting only the distinct ones).

The product of its digits is 1764000, while the sum is 47.

The square root of 2257725656 is about 47515.5306820833. The cubic root of 2257725656 is about 1311.8687576309.

The spelling of 2257725656 in words is "two billion, two hundred fifty-seven million, seven hundred twenty-five thousand, six hundred fifty-six".