25140512013 has 4 divisors (see below), whose sum is σ = 33520682688. Its totient is φ = 16760341340.

The previous prime is 25140512011. The next prime is 25140512021. The reversal of 25140512013 is 31021504152.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25140512013 - 2¹ = 25140512011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140512011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4190085333 + ... + 4190085338.

It is an arithmetic number, because the mean of its divisors is an integer number (8380170672).

Almost surely, 2^25140512013 is an apocalyptic number.

It is an amenable number.

25140512013 is a deficient number, since it is larger than the sum of its proper divisors (8380170675).

25140512013 is an equidigital number, since it uses as much as digits as its factorization.

25140512013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8380170674.

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 25140512013 in words is "twenty-five billion, one hundred forty million, five hundred twelve thousand, thirteen".