25790472587 has 4 divisors (see below), whose sum is σ = 28135061016. Its totient is φ = 23445884160.

The previous prime is 25790472583. The next prime is 25790472601. The reversal of 25790472587 is 78527409752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25790472587 - 2² = 25790472583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25790472583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172294198 + ... + 1172294219.

It is an arithmetic number, because the mean of its divisors is an integer number (7033765254).

Almost surely, 2^25790472587 is an apocalyptic number.

25790472587 is a deficient number, since it is larger than the sum of its proper divisors (2344588429).

25790472587 is a wasteful number, since it uses less digits than its factorization.

25790472587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344588428.

The product of its (nonzero) digits is 9878400, while the sum is 56.

The spelling of 25790472587 in words is "twenty-five billion, seven hundred ninety million, four hundred seventy-two thousand, five hundred eighty-seven".