25135544514 has 32 divisors (see below), whose sum is σ = 53274231360. Its totient is φ = 7878843392.

The previous prime is 25135544513. The next prime is 25135544537. The reversal of 25135544514 is 41544553152.

It is not an unprimeable number, because it can be changed into a prime (25135544513) 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, 12682 + ... + 224570.

It is an arithmetic number, because the mean of its divisors is an integer number (1664819730).

Almost surely, 2^25135544514 is an apocalyptic number.

25135544514 is an abundant number, since it is smaller than the sum of its proper divisors (28138686846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25135544514 is a wasteful number, since it uses less digits than its factorization.

25135544514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213074.

The product of its digits is 240000, while the sum is 39.

The spelling of 25135544514 in words is "twenty-five billion, one hundred thirty-five million, five hundred forty-four thousand, five hundred fourteen".