25135622523 has 96 divisors (see below), whose sum is σ = 42383278080. Its totient is φ = 14211288000.

The previous prime is 25135622521. The next prime is 25135622531. The reversal of 25135622523 is 32522653152.

25135622523 is a `hidden beast` number, since 2 + 5 + 1 + 3 + 5 + 622 + 5 + 23 = 666.

It is not a de Polignac number, because 25135622523 - 2¹ = 25135622521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25135622521) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10424188 + ... + 10426598.

It is an arithmetic number, because the mean of its divisors is an integer number (441492480).

Almost surely, 2^25135622523 is an apocalyptic number.

25135622523 is a deficient number, since it is larger than the sum of its proper divisors (17247655557).

25135622523 is a wasteful number, since it uses less digits than its factorization.

25135622523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581 (or 2578 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The spelling of 25135622523 in words is "twenty-five billion, one hundred thirty-five million, six hundred twenty-two thousand, five hundred twenty-three".