315545445543225 has 24 divisors (see below), whose sum is σ = 539691520656960. Its totient is φ = 162487769657920.

The previous prime is 315545445543199. The next prime is 315545445543287. The reversal of 315545445543225 is 522345544545513.

It is not a de Polignac number, because 315545445543225 - 2⁶ = 315545445543161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72539180709 + ... + 72539185058.

It is an arithmetic number, because the mean of its divisors is an integer number (22487146694040).

Almost surely, 2^{315545445543225} is an apocalyptic number.

It is an amenable number.

315545445543225 is a deficient number, since it is larger than the sum of its proper divisors (224146075113735).

315545445543225 is a wasteful number, since it uses less digits than its factorization.

315545445543225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145078365809 (or 145078365804 counting only the distinct ones).

The product of its digits is 144000000, while the sum is 57.

The spelling of 315545445543225 in words is "three hundred fifteen trillion, five hundred forty-five billion, four hundred forty-five million, five hundred forty-three thousand, two hundred twenty-five".