25506992423 has 16 divisors (see below), whose sum is σ = 29529225216. Its totient is φ = 21774829440.

The previous prime is 25506992411. The next prime is 25506992429. The reversal of 25506992423 is 32429960552.

It is not a de Polignac number, because 25506992423 - 2¹⁰ = 25506991399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25506992429) 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, 71111 + ... + 236792.

It is an arithmetic number, because the mean of its divisors is an integer number (1845576576).

Almost surely, 2^25506992423 is an apocalyptic number.

25506992423 is a deficient number, since it is larger than the sum of its proper divisors (4022232793).

25506992423 is a wasteful number, since it uses less digits than its factorization.

25506992423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308374.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 25506992423 in words is "twenty-five billion, five hundred six million, nine hundred ninety-two thousand, four hundred twenty-three".