225657615527 has 16 divisors (see below), whose sum is σ = 232891822080. Its totient is φ = 218535252000.

The previous prime is 225657615503. The next prime is 225657615539. The reversal of 225657615527 is 725516756522.

It is a cyclic number.

It is not a de Polignac number, because 225657615527 - 2¹⁰ = 225657614503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225657605527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22902152 + ... + 22912002.

It is an arithmetic number, because the mean of its divisors is an integer number (14555738880).

Almost surely, 2^225657615527 is an apocalyptic number.

225657615527 is a deficient number, since it is larger than the sum of its proper divisors (7234206553).

225657615527 is an equidigital number, since it uses as much as digits as its factorization.

225657615527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15454.

The product of its digits is 8820000, while the sum is 53.

The spelling of 225657615527 in words is "two hundred twenty-five billion, six hundred fifty-seven million, six hundred fifteen thousand, five hundred twenty-seven".