25132515523 has 4 divisors (see below), whose sum is σ = 25133099040. Its totient is φ = 25131932008.

The previous prime is 25132515497. The next prime is 25132515557. The reversal of 25132515523 is 32551523152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25132515523 - 2²⁵ = 25098961091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25132515823) 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, 221515 + ... + 315172.

It is an arithmetic number, because the mean of its divisors is an integer number (6283274760).

Almost surely, 2^25132515523 is an apocalyptic number.

25132515523 is a deficient number, since it is larger than the sum of its proper divisors (583517).

25132515523 is an equidigital number, since it uses as much as digits as its factorization.

25132515523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583516.

The product of its digits is 45000, while the sum is 34.

The spelling of 25132515523 in words is "twenty-five billion, one hundred thirty-two million, five hundred fifteen thousand, five hundred twenty-three".