225440542531225 has 24 divisors (see below), whose sum is σ = 321441463522880. Its totient is φ = 153639409158720.

The previous prime is 225440542531219. The next prime is 225440542531231. The reversal of 225440542531225 is 522135245044522.

It is an interprime number because it is at equal distance from previous prime (225440542531219) and next prime (225440542531231).

It is not a de Polignac number, because 225440542531225 - 2⁴¹ = 223241519275673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3951602370 + ... + 3951659419.

Almost surely, 2^{225440542531225} is an apocalyptic number.

225440542531225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225440542531225 is a deficient number, since it is larger than the sum of its proper divisors (96000920991655).

225440542531225 is a wasteful number, since it uses less digits than its factorization.

225440542531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7903261969 (or 7903261964 counting only the distinct ones).

The product of its (nonzero) digits is 3840000, while the sum is 46.

Adding to 225440542531225 its reverse (522135245044522), we get a palindrome (747575787575747).

The spelling of 225440542531225 in words is "two hundred twenty-five trillion, four hundred forty billion, five hundred forty-two million, five hundred thirty-one thousand, two hundred twenty-five".