225517355 has 16 divisors (see below), whose sum is σ = 315595200. Its totient is φ = 154639296.

The previous prime is 225517351. The next prime is 225517363. The reversal of 225517355 is 553715522.

It is a happy number.

It is not a de Polignac number, because 225517355 - 2² = 225517351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (225517351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64034 + ... + 67463.

It is an arithmetic number, because the mean of its divisors is an integer number (19724700).

Almost surely, 2^225517355 is an apocalyptic number.

225517355 is a deficient number, since it is larger than the sum of its proper divisors (90077845).

225517355 is an equidigital number, since it uses as much as digits as its factorization.

225517355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131523 (or 131509 counting only the distinct ones).

The product of its digits is 52500, while the sum is 35.

The square root of 225517355 is about 15017.2352648548. The cubic root of 225517355 is about 608.6860142133.

The spelling of 225517355 in words is "two hundred twenty-five million, five hundred seventeen thousand, three hundred fifty-five".