25262505423 has 20 divisors (see below), whose sum is σ = 39378594288. Its totient is φ = 16109422560.

The previous prime is 25262505403. The next prime is 25262505449. The reversal of 25262505423 is 32450526252.

25262505423 is a `hidden beast` number, since 2 + 5 + 2 + 62 + 50 + 542 + 3 = 666.

It is not a de Polignac number, because 25262505423 - 2⁸ = 25262505167 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25262505403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6778198 + ... + 6781923.

Almost surely, 2^25262505423 is an apocalyptic number.

25262505423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25262505423 is a deficient number, since it is larger than the sum of its proper divisors (14116088865).

25262505423 is a wasteful number, since it uses less digits than its factorization.

25262505423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13560156 (or 13560147 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 25262505423 in words is "twenty-five billion, two hundred sixty-two million, five hundred five thousand, four hundred twenty-three".