225517455 has 24 divisors (see below), whose sum is σ = 391687920. Its totient is φ = 120032640.

The previous prime is 225517451. The next prime is 225517477. The reversal of 225517455 is 554715522.

It is not a de Polignac number, because 225517455 - 2² = 225517451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225517451) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 18636 + ... + 28254.

It is an arithmetic number, because the mean of its divisors is an integer number (16320330).

Almost surely, 2^225517455 is an apocalyptic number.

225517455 is a deficient number, since it is larger than the sum of its proper divisors (166170465).

225517455 is a wasteful number, since it uses less digits than its factorization.

225517455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10151 (or 10148 counting only the distinct ones).

The product of its digits is 70000, while the sum is 36.

The square root of 225517455 is about 15017.2385943621. The cubic root of 225517455 is about 608.6861041822.

The spelling of 225517455 in words is "two hundred twenty-five million, five hundred seventeen thousand, four hundred fifty-five".