225521502 has 16 divisors (see below), whose sum is σ = 451859472. Its totient is φ = 75037760.

The previous prime is 225521479. The next prime is 225521503. The reversal of 225521502 is 205125522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225521503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30399 + ... + 37082.

It is an arithmetic number, because the mean of its divisors is an integer number (28241217).

Almost surely, 2^225521502 is an apocalyptic number.

225521502 is an abundant number, since it is smaller than the sum of its proper divisors (226337970).

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

225521502 is a wasteful number, since it uses less digits than its factorization.

225521502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68043.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 225521502 is about 15017.3733389032. The cubic root of 225521502 is about 608.6897451981.

The spelling of 225521502 in words is "two hundred twenty-five million, five hundred twenty-one thousand, five hundred two".