253531012425 has 96 divisors (see below), whose sum is σ = 435151315200. Its totient is φ = 130148674560.

The previous prime is 253531012421. The next prime is 253531012459. The reversal of 253531012425 is 524210135352.

It is not a de Polignac number, because 253531012425 - 2² = 253531012421 is a prime.

It is a super-2 number, since 2×253531012425² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253531012421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 106123131 + ... + 106125519.

It is an arithmetic number, because the mean of its divisors is an integer number (4532826200).

Almost surely, 2^253531012425 is an apocalyptic number.

253531012425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253531012425 is a deficient number, since it is larger than the sum of its proper divisors (181620302775).

253531012425 is a wasteful number, since it uses less digits than its factorization.

253531012425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 253531012425 its reverse (524210135352), we get a palindrome (777741147777).

The spelling of 253531012425 in words is "two hundred fifty-three billion, five hundred thirty-one million, twelve thousand, four hundred twenty-five".