225252513 has 6 divisors (see below), whose sum is σ = 325364754. Its totient is φ = 150168336.

The previous prime is 225252457. The next prime is 225252551. The reversal of 225252513 is 315252522.

It can be written as a sum of positive squares in only one way, i.e., 178302609 + 46949904 = 13353^2 + 6852^2 .

It is not a de Polignac number, because 225252513 - 2⁶ = 225252449 is a prime.

It is a super-2 number, since 2×225252513² = 101477389225630338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225252553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12514020 + ... + 12514037.

It is an arithmetic number, because the mean of its divisors is an integer number (54227459).

Almost surely, 2^225252513 is an apocalyptic number.

It is an amenable number.

225252513 is a deficient number, since it is larger than the sum of its proper divisors (100112241).

225252513 is a wasteful number, since it uses less digits than its factorization.

225252513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25028063 (or 25028060 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 225252513 is about 15008.4147397385. The cubic root of 225252513 is about 608.4476456143.

Subtracting 225252513 from its reverse (315252522), we obtain a palindrome (90000009).

The spelling of 225252513 in words is "two hundred twenty-five million, two hundred fifty-two thousand, five hundred thirteen".