225168972 has 24 divisors (see below), whose sum is σ = 600450816. Its totient is φ = 64333968.

The previous prime is 225168971. The next prime is 225168973. The reversal of 225168972 is 279861522.

It is an interprime number because it is at equal distance from previous prime (225168971) and next prime (225168973).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (225168971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340208 + ... + 1340375.

It is an arithmetic number, because the mean of its divisors is an integer number (25018784).

Almost surely, 2^225168972 is an apocalyptic number.

It is an amenable number.

225168972 is an abundant number, since it is smaller than the sum of its proper divisors (375281844).

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

225168972 is a wasteful number, since it uses less digits than its factorization.

225168972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680597 (or 2680595 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 225168972 is about 15005.6313429326. The cubic root of 225168972 is about 608.3724165461.

The spelling of 225168972 in words is "two hundred twenty-five million, one hundred sixty-eight thousand, nine hundred seventy-two".