25287926623 has 24 divisors (see below), whose sum is σ = 26419251600. Its totient is φ = 24193293696.

The previous prime is 25287926597. The next prime is 25287926687. The reversal of 25287926623 is 32662978252.

It is a de Polignac number, because none of the positive numbers 2^k-25287926623 is a prime.

It is a Duffinian number.

Its product of digits (4354560) is a multiple of the sum of its prime divisors (1080).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25287926123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29438368 + ... + 29439226.

It is an arithmetic number, because the mean of its divisors is an integer number (1100802150).

Almost surely, 2^25287926623 is an apocalyptic number.

25287926623 is a deficient number, since it is larger than the sum of its proper divisors (1131324977).

25287926623 is an frugal number, since it uses more digits than its factorization.

25287926623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159 (or 1080 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The spelling of 25287926623 in words is "twenty-five billion, two hundred eighty-seven million, nine hundred twenty-six thousand, six hundred twenty-three".