225788428 has 6 divisors (see below), whose sum is σ = 395129756. Its totient is φ = 112894212.

The previous prime is 225788413. The next prime is 225788443. The reversal of 225788428 is 824887522.

It is an interprime number because it is at equal distance from previous prime (225788413) and next prime (225788443).

It is a super-2 number, since 2×225788428² = 101960828437422368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28223550 + ... + 28223557.

Almost surely, 2^225788428 is an apocalyptic number.

It is an amenable number.

225788428 is a deficient number, since it is larger than the sum of its proper divisors (169341328).

225788428 is a wasteful number, since it uses less digits than its factorization.

225788428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56447111 (or 56447109 counting only the distinct ones).

The product of its digits is 573440, while the sum is 46.

The square root of 225788428 is about 15026.2579506676. The cubic root of 225788428 is about 608.9297977844.

The spelling of 225788428 in words is "two hundred twenty-five million, seven hundred eighty-eight thousand, four hundred twenty-eight".