25231011513 has 8 divisors (see below), whose sum is σ = 34276091328. Its totient is φ = 16503303024.

The previous prime is 25231011503. The next prime is 25231011521. The reversal of 25231011513 is 31511013252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25231011513 - 2⁴ = 25231011497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25231011503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79342645 + ... + 79342962.

It is an arithmetic number, because the mean of its divisors is an integer number (4284511416).

Almost surely, 2^25231011513 is an apocalyptic number.

It is an amenable number.

25231011513 is a deficient number, since it is larger than the sum of its proper divisors (9045079815).

25231011513 is a wasteful number, since it uses less digits than its factorization.

25231011513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158685663.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 25231011513 its reverse (31511013252), we get a palindrome (56742024765).

The spelling of 25231011513 in words is "twenty-five billion, two hundred thirty-one million, eleven thousand, five hundred thirteen".