225156516 has 24 divisors (see below), whose sum is σ = 565778304. Its totient is φ = 69278880.

The previous prime is 225156473. The next prime is 225156523. The reversal of 225156516 is 615651522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721500 + ... + 721811.

It is an arithmetic number, because the mean of its divisors is an integer number (23574096).

Almost surely, 2^225156516 is an apocalyptic number.

225156516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

225156516 is an abundant number, since it is smaller than the sum of its proper divisors (340621788).

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

225156516 is a wasteful number, since it uses less digits than its factorization.

225156516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443331 (or 1443329 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 225156516 is about 15005.2162930096. The cubic root of 225156516 is about 608.3611982649.

The spelling of 225156516 in words is "two hundred twenty-five million, one hundred fifty-six thousand, five hundred sixteen".