56147572525 has 18 divisors (see below), whose sum is σ = 76527753386. Its totient is φ = 40834596000.

The previous prime is 56147572519. The next prime is 56147572529. The reversal of 56147572525 is 52527574165.

It can be written as a sum of positive squares in 3 ways, for example, as 74753316 + 56072819209 = 8646^2 + 236797^2 .

It is a de Polignac number, because none of the positive numbers 2^k-56147572525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56147572529) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9277566 + ... + 9283615.

Almost surely, 2^56147572525 is an apocalyptic number.

56147572525 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56147572525 is a deficient number, since it is larger than the sum of its proper divisors (20380180861).

56147572525 is a wasteful number, since it uses less digits than its factorization.

56147572525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18561213 (or 18561197 counting only the distinct ones).

The product of its digits is 2940000, while the sum is 49.

The spelling of 56147572525 in words is "fifty-six billion, one hundred forty-seven million, five hundred seventy-two thousand, five hundred twenty-five".