56509825 has 6 divisors (see below), whose sum is σ = 70072214. Its totient is φ = 45207840.

The previous prime is 56509801. The next prime is 56509861. The reversal of 56509825 is 52890565.

It can be written as a sum of positive squares in 3 ways, for example, as 199809 + 56310016 = 447^2 + 7504^2 .

It is not a de Polignac number, because 56509825 - 2¹⁷ = 56378753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1130172 + ... + 1130221.

Almost surely, 2^56509825 is an apocalyptic number.

It is an amenable number.

56509825 is a deficient number, since it is larger than the sum of its proper divisors (13562389).

56509825 is a wasteful number, since it uses less digits than its factorization.

56509825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260403 (or 2260398 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 56509825 is about 7517.3017100553. The cubic root of 56509825 is about 383.7437549161.

The spelling of 56509825 in words is "fifty-six million, five hundred nine thousand, eight hundred twenty-five".