25235124313 has 32 divisors (see below), whose sum is σ = 30064608000. Its totient is φ = 21164951808.

The previous prime is 25235124311. The next prime is 25235124359. The reversal of 25235124313 is 31342153252.

It is not a de Polignac number, because 25235124313 - 2¹ = 25235124311 is a prime.

It is a super-2 number, since 2×25235124313² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25235124311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7615345 + ... + 7618657.

It is an arithmetic number, because the mean of its divisors is an integer number (939519000).

Almost surely, 2^25235124313 is an apocalyptic number.

It is an amenable number.

25235124313 is a deficient number, since it is larger than the sum of its proper divisors (4829483687).

25235124313 is an equidigital number, since it uses as much as digits as its factorization.

25235124313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806 (or 3792 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

Adding to 25235124313 its reverse (31342153252), we get a palindrome (56577277565).

The spelling of 25235124313 in words is "twenty-five billion, two hundred thirty-five million, one hundred twenty-four thousand, three hundred thirteen".