655225545522556 has 48 divisors (see below), whose sum is σ = 1205586437882400. Its totient is φ = 311155162230528.

The previous prime is 655225545522553. The next prime is 655225545522593.

655225545522556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×655225545522556² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655225545522551) 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, 53943751 + ... + 64964446.

It is an arithmetic number, because the mean of its divisors is an integer number (25116384122550).

Almost surely, 2^{655225545522556} is an apocalyptic number.

It is an amenable number.

655225545522556 is a deficient number, since it is larger than the sum of its proper divisors (550360892359844).

655225545522556 is a wasteful number, since it uses less digits than its factorization.

655225545522556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118909006 (or 118909004 counting only the distinct ones).

The product of its digits is 900000000, while the sum is 64.

The spelling of 655225545522556 in words is "six hundred fifty-five trillion, two hundred twenty-five billion, five hundred forty-five million, five hundred twenty-two thousand, five hundred fifty-six".