25400271579 has 16 divisors (see below), whose sum is σ = 34698209280. Its totient is φ = 16518047040.

The previous prime is 25400271541. The next prime is 25400271623. The reversal of 25400271579 is 97517200452.

It is not a de Polignac number, because 25400271579 - 2¹⁶ = 25400206043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25400271579.

It is not an unprimeable number, because it can be changed into a prime (25400271539) 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, 1215582 + ... + 1236300.

It is an arithmetic number, because the mean of its divisors is an integer number (2168638080).

Almost surely, 2^25400271579 is an apocalyptic number.

25400271579 is a deficient number, since it is larger than the sum of its proper divisors (9297937701).

25400271579 is a wasteful number, since it uses less digits than its factorization.

25400271579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30730.

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 25400271579 in words is "twenty-five billion, four hundred million, two hundred seventy-one thousand, five hundred seventy-nine".