56645725 has 12 divisors (see below), whose sum is σ = 70391700. Its totient is φ = 45219200.

The previous prime is 56645689. The next prime is 56645731. The reversal of 56645725 is 52754665.

It can be written as a sum of positive squares in 6 ways, for example, as 16475481 + 40170244 = 4059^2 + 6338^2 .

It is a de Polignac number, because none of the positive numbers 2^k-56645725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10851 + ... + 15199.

It is an arithmetic number, because the mean of its divisors is an integer number (5865975).

Almost surely, 2^56645725 is an apocalyptic number.

It is an amenable number.

56645725 is a deficient number, since it is larger than the sum of its proper divisors (13745975).

56645725 is a wasteful number, since it uses less digits than its factorization.

56645725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880 (or 4875 counting only the distinct ones).

The product of its digits is 252000, while the sum is 40.

The square root of 56645725 is about 7526.3354296763. The cubic root of 56645725 is about 384.0511293500.

The spelling of 56645725 in words is "fifty-six million, six hundred forty-five thousand, seven hundred twenty-five".