225121504 has 24 divisors (see below), whose sum is σ = 457507008. Its totient is φ = 108929280.

The previous prime is 225121499. The next prime is 225121549. The reversal of 225121504 is 405121522.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112477 + ... + 114460.

It is an arithmetic number, because the mean of its divisors is an integer number (19062792).

Almost surely, 2^225121504 is an apocalyptic number.

It is an amenable number.

225121504 is an abundant number, since it is smaller than the sum of its proper divisors (232385504).

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

225121504 is a wasteful number, since it uses less digits than its factorization.

225121504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226978 (or 226970 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 225121504 is about 15004.0495866949. The cubic root of 225121504 is about 608.3296630958.

It can be divided in two parts, 225121 and 504, that added together give a square (225625 = 475²).

The spelling of 225121504 in words is "two hundred twenty-five million, one hundred twenty-one thousand, five hundred four".