25545135524 has 12 divisors (see below), whose sum is σ = 44705259648. Its totient is φ = 12772204200.

The previous prime is 25545135419. The next prime is 25545135557. The reversal of 25545135524 is 42553154552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123269 + ... + 257459.

It is an arithmetic number, because the mean of its divisors is an integer number (3725438304).

Almost surely, 2^25545135524 is an apocalyptic number.

It is an amenable number.

25545135524 is a deficient number, since it is larger than the sum of its proper divisors (19160124124).

25545135524 is a wasteful number, since it uses less digits than its factorization.

25545135524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181786 (or 181784 counting only the distinct ones).

The product of its digits is 600000, while the sum is 41.

The spelling of 25545135524 in words is "twenty-five billion, five hundred forty-five million, one hundred thirty-five thousand, five hundred twenty-four".