225702225 has 72 divisors (see below), whose sum is σ = 471993600. Its totient is φ = 100949760.

The previous prime is 225702221. The next prime is 225702233. The reversal of 225702225 is 522207522.

It is not a de Polignac number, because 225702225 - 2² = 225702221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225702221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 72501 + ... + 75549.

Almost surely, 2^225702225 is an apocalyptic number.

225702225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225702225 is an abundant number, since it is smaller than the sum of its proper divisors (246291375).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225702225 is a wasteful number, since it uses less digits than its factorization.

225702225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119 (or 3111 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 225702225 is about 15023.3892647432. The cubic root of 225702225 is about 608.8522941712.

Adding to 225702225 its reverse (522207522), we get a palindrome (747909747).

The spelling of 225702225 in words is "two hundred twenty-five million, seven hundred two thousand, two hundred twenty-five".