225132500 has 30 divisors (see below), whose sum is σ = 492325218. Its totient is φ = 90052000.

The previous prime is 225132493. The next prime is 225132521. The reversal of 225132500 is 5231522.

It can be written as a sum of positive squares in 5 ways, for example, as 86787856 + 138344644 = 9316^2 + 11762^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42527 + ... + 47526.

Almost surely, 2^225132500 is an apocalyptic number.

225132500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225132500 is an abundant number, since it is smaller than the sum of its proper divisors (267192718).

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

225132500 is an equidigital number, since it uses as much as digits as its factorization.

225132500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90077 (or 90060 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 225132500 is about 15004.4160166266. The cubic root of 225132500 is about 608.3395675014.

The spelling of 225132500 in words is "two hundred twenty-five million, one hundred thirty-two thousand, five hundred".