225702745 has 16 divisors (see below), whose sum is σ = 282013200. Its totient is φ = 173260800.

The previous prime is 225702739. The next prime is 225702769. The reversal of 225702745 is 547207522.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 42614784 + 183087961 = 6528^2 + 13531^2 .

It is not a de Polignac number, because 225702745 - 2⁵ = 225702713 is a prime.

It is a super-3 number, since 3×225702745³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 225702745.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3481 + ... + 21529.

It is an arithmetic number, because the mean of its divisors is an integer number (17625825).

Almost surely, 2^225702745 is an apocalyptic number.

It is an amenable number.

225702745 is a deficient number, since it is larger than the sum of its proper divisors (56310455).

225702745 is a wasteful number, since it uses less digits than its factorization.

225702745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18156.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 225702745 is about 15023.4065710810. The cubic root of 225702745 is about 608.8527617533.

The spelling of 225702745 in words is "two hundred twenty-five million, seven hundred two thousand, seven hundred forty-five".