56521371242225 has 12 divisors (see below), whose sum is σ = 73133739486336. Its totient is φ = 43251136254480.

The previous prime is 56521371242207. The next prime is 56521371242267. The reversal of 56521371242225 is 52224217312565.

It is not a de Polignac number, because 56521371242225 - 2¹⁰ = 56521371241201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56521371242225.

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, 49149017897 + ... + 49149019046.

It is an arithmetic number, because the mean of its divisors is an integer number (6094478290528).

Almost surely, 2^{56521371242225} is an apocalyptic number.

It is an amenable number.

56521371242225 is a deficient number, since it is larger than the sum of its proper divisors (16612368244111).

56521371242225 is a wasteful number, since it uses less digits than its factorization.

56521371242225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98298036976 (or 98298036971 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 47.

The spelling of 56521371242225 in words is "fifty-six trillion, five hundred twenty-one billion, three hundred seventy-one million, two hundred forty-two thousand, two hundred twenty-five".