225401655 has 16 divisors (see below), whose sum is σ = 379624320. Its totient is φ = 113887008.

The previous prime is 225401647. The next prime is 225401663. The reversal of 225401655 is 556104522.

It is an interprime number because it is at equal distance from previous prime (225401647) and next prime (225401663).

It is not a de Polignac number, because 225401655 - 2³ = 225401647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395157 + ... + 395726.

It is an arithmetic number, because the mean of its divisors is an integer number (23726520).

Almost surely, 2^225401655 is an apocalyptic number.

225401655 is a deficient number, since it is larger than the sum of its proper divisors (154222665).

225401655 is a wasteful number, since it uses less digits than its factorization.

225401655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790910.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 225401655 is about 15013.3825302628. The cubic root of 225401655 is about 608.5819024641.

The spelling of 225401655 in words is "two hundred twenty-five million, four hundred one thousand, six hundred fifty-five".