225156556 has 12 divisors (see below), whose sum is σ = 395479840. Its totient is φ = 112162320.

The previous prime is 225156523. The next prime is 225156583. The reversal of 225156556 is 655651522.

It is a super-2 number, since 2×225156556² = 101390949419562272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 102771 + ... + 104938.

Almost surely, 2^225156556 is an apocalyptic number.

It is an amenable number.

225156556 is a deficient number, since it is larger than the sum of its proper divisors (170323284).

225156556 is a wasteful number, since it uses less digits than its factorization.

225156556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207984 (or 207982 counting only the distinct ones).

The product of its digits is 90000, while the sum is 37.

The square root of 225156556 is about 15005.2176258793. The cubic root of 225156556 is about 608.3612342909.

The spelling of 225156556 in words is "two hundred twenty-five million, one hundred fifty-six thousand, five hundred fifty-six".