25371573487 has 24 divisors (see below), whose sum is σ = 29092788144. Its totient is φ = 21990479616.

The previous prime is 25371573431. The next prime is 25371573497. The reversal of 25371573487 is 78437517352.

It is not a de Polignac number, because 25371573487 - 2²³ = 25363184879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25371573407) 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, 506388 + ... + 554230.

It is an arithmetic number, because the mean of its divisors is an integer number (1212199506).

Almost surely, 2^25371573487 is an apocalyptic number.

25371573487 is a deficient number, since it is larger than the sum of its proper divisors (3721214657).

25371573487 is a wasteful number, since it uses less digits than its factorization.

25371573487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48007 (or 47988 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 52.

The spelling of 25371573487 in words is "twenty-five billion, three hundred seventy-one million, five hundred seventy-three thousand, four hundred eighty-seven".