25539724223 has 16 divisors (see below), whose sum is σ = 29832528096. Its totient is φ = 21647170560.

The previous prime is 25539724213. The next prime is 25539724261. The reversal of 25539724223 is 32242793552.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25539724223 - 2⁴ = 25539724207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25539724213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400261 + ... + 1418382.

It is an arithmetic number, because the mean of its divisors is an integer number (1864533006).

Almost surely, 2^25539724223 is an apocalyptic number.

25539724223 is a deficient number, since it is larger than the sum of its proper divisors (4292803873).

25539724223 is a wasteful number, since it uses less digits than its factorization.

25539724223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818714.

The product of its digits is 907200, while the sum is 44.

The spelling of 25539724223 in words is "twenty-five billion, five hundred thirty-nine million, seven hundred twenty-four thousand, two hundred twenty-three".