225547902 has 20 divisors (see below), whose sum is σ = 505394736. Its totient is φ = 75182580.

The previous prime is 225547873. The next prime is 225547919. The reversal of 225547902 is 209745522.

It is a happy number.

225547902 is a `hidden beast` number, since 2 + 25 + 547 + 90 + 2 = 666.

It is a super-3 number, since 3×225547902³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 695974 + ... + 696297.

Almost surely, 2^225547902 is an apocalyptic number.

225547902 is an abundant number, since it is smaller than the sum of its proper divisors (279846834).

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

225547902 is a wasteful number, since it uses less digits than its factorization.

225547902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392285 (or 1392276 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 225547902 is about 15018.2522951241. The cubic root of 225547902 is about 608.7134957527.

The spelling of 225547902 in words is "two hundred twenty-five million, five hundred forty-seven thousand, nine hundred two".