225510523225 has 12 divisors (see below), whose sum is σ = 301143283756. Its totient is φ = 166530847680.

The previous prime is 225510523201. The next prime is 225510523297. The reversal of 225510523225 is 522325015522.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 87902169289 + 137608353936 = 296483^2 + 370956^2 .

It is not a de Polignac number, because 225510523225 - 2¹⁷ = 225510392153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346938942 + ... + 346939591.

Almost surely, 2^225510523225 is an apocalyptic number.

225510523225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225510523225 is a deficient number, since it is larger than the sum of its proper divisors (75632760531).

225510523225 is a wasteful number, since it uses less digits than its factorization.

225510523225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693878556 (or 693878551 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 225510523225 its reverse (522325015522), we get a palindrome (747835538747).

The spelling of 225510523225 in words is "two hundred twenty-five billion, five hundred ten million, five hundred twenty-three thousand, two hundred twenty-five".