252231525 has 144 divisors (see below), whose sum is σ = 566185984. Its totient is φ = 104509440.

The previous prime is 252231503. The next prime is 252231557. The reversal of 252231525 is 525132252.

It is not a de Polignac number, because 252231525 - 2⁸ = 252231269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1986012 + ... + 1986138.

Almost surely, 2^252231525 is an apocalyptic number.

252231525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

252231525 is an abundant number, since it is smaller than the sum of its proper divisors (313954459).

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

252231525 is a wasteful number, since it uses less digits than its factorization.

252231525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 252 counting only the distinct ones).

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

The square root of 252231525 is about 15881.7985442455. The cubic root of 252231525 is about 631.8293390680.

Adding to 252231525 its reverse (525132252), we get a palindrome (777363777).

The spelling of 252231525 in words is "two hundred fifty-two million, two hundred thirty-one thousand, five hundred twenty-five".