225138408 has 48 divisors (see below), whose sum is σ = 618673440. Its totient is φ = 68222880.

The previous prime is 225138341. The next prime is 225138427. The reversal of 225138408 is 804831522.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35860 + ... + 41667.

It is an arithmetic number, because the mean of its divisors is an integer number (12889030).

Almost surely, 2^225138408 is an apocalyptic number.

It is an amenable number.

225138408 is an abundant number, since it is smaller than the sum of its proper divisors (393535032).

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

225138408 is a wasteful number, since it uses less digits than its factorization.

225138408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77558 (or 77543 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 225138408 is about 15004.6128907080. The cubic root of 225138408 is about 608.3448888695.

The spelling of 225138408 in words is "two hundred twenty-five million, one hundred thirty-eight thousand, four hundred eight".