225656651 has 24 divisors (see below), whose sum is σ = 256285680. Its totient is φ = 198443520.

The previous prime is 225656633. The next prime is 225656653. The reversal of 225656651 is 156656522.

It is a happy number.

It is not a de Polignac number, because 225656651 - 2¹⁰ = 225655627 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225656653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520931 + ... + 521363.

It is an arithmetic number, because the mean of its divisors is an integer number (10678570).

Almost surely, 2^225656651 is an apocalyptic number.

225656651 is a deficient number, since it is larger than the sum of its proper divisors (30629029).

225656651 is a wasteful number, since it uses less digits than its factorization.

225656651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 576 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The square root of 225656651 is about 15021.8724199082. The cubic root of 225656651 is about 608.8113114084.

The spelling of 225656651 in words is "two hundred twenty-five million, six hundred fifty-six thousand, six hundred fifty-one".