225397237156 has 48 divisors (see below), whose sum is σ = 492716861056. Its totient is φ = 87837260544.

The previous prime is 225397237097. The next prime is 225397237193. The reversal of 225397237156 is 651732793522.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4596681 + ... + 4645456.

Almost surely, 2^225397237156 is an apocalyptic number.

225397237156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

225397237156 is an abundant number, since it is smaller than the sum of its proper divisors (267319623900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225397237156 is a wasteful number, since it uses less digits than its factorization.

225397237156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9242228 (or 9242226 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 52.

The spelling of 225397237156 in words is "two hundred twenty-five billion, three hundred ninety-seven million, two hundred thirty-seven thousand, one hundred fifty-six".