25889137145 has 16 divisors (see below), whose sum is σ = 31496617152. Its totient is φ = 20425753920.

The previous prime is 25889137139. The next prime is 25889137177. The reversal of 25889137145 is 54173198852.

It is not a de Polignac number, because 25889137145 - 2⁶ = 25889137081 is a prime.

It is a super-2 number, since 2×25889137145² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182339 + ... + 291591.

It is an arithmetic number, because the mean of its divisors is an integer number (1968538572).

Almost surely, 2^25889137145 is an apocalyptic number.

It is an amenable number.

25889137145 is a deficient number, since it is larger than the sum of its proper divisors (5607480007).

25889137145 is a wasteful number, since it uses less digits than its factorization.

25889137145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109912.

The product of its digits is 2419200, while the sum is 53.

The spelling of 25889137145 in words is "twenty-five billion, eight hundred eighty-nine million, one hundred thirty-seven thousand, one hundred forty-five".