25135249118923 has 4 divisors (see below), whose sum is σ = 26613793184760. Its totient is φ = 23656705053088.

The previous prime is 25135249118893. The next prime is 25135249118929. The reversal of 25135249118923 is 32981194253152.

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 25135249118923 - 2⁵ = 25135249118891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25135249118929) 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, 739272032893 + ... + 739272032926.

It is an arithmetic number, because the mean of its divisors is an integer number (6653448296190).

Almost surely, 2^{25135249118923} is an apocalyptic number.

25135249118923 is a deficient number, since it is larger than the sum of its proper divisors (1478544065837).

25135249118923 is a wasteful number, since it uses less digits than its factorization.

25135249118923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478544065836.

The product of its digits is 4665600, while the sum is 55.

The spelling of 25135249118923 in words is "twenty-five trillion, one hundred thirty-five billion, two hundred forty-nine million, one hundred eighteen thousand, nine hundred twenty-three".