25899193475 has 12 divisors (see below), whose sum is σ = 32861861736. Its totient is φ = 20237508480.

The previous prime is 25899193471. The next prime is 25899193513. The reversal of 25899193475 is 57439199852.

It is not a de Polignac number, because 25899193475 - 2² = 25899193471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25899193471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12045062 + ... + 12047211.

It is an arithmetic number, because the mean of its divisors is an integer number (2738488478).

Almost surely, 2^25899193475 is an apocalyptic number.

25899193475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25899193475 is a deficient number, since it is larger than the sum of its proper divisors (6962668261).

25899193475 is a wasteful number, since it uses less digits than its factorization.

25899193475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24092326 (or 24092321 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 62.

The spelling of 25899193475 in words is "twenty-five billion, eight hundred ninety-nine million, one hundred ninety-three thousand, four hundred seventy-five".