25011020135564 has 12 divisors (see below), whose sum is σ = 45672297639024. Its totient is φ = 11961792238704.

The previous prime is 25011020135551. The next prime is 25011020135567. The reversal of 25011020135564 is 46553102011052.

It is a super-2 number, since 2×25011020135564² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25011020135567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135929457167 + ... + 135929457350.

It is an arithmetic number, because the mean of its divisors is an integer number (3806024803252).

Almost surely, 2^{25011020135564} is an apocalyptic number.

It is an amenable number.

25011020135564 is a deficient number, since it is larger than the sum of its proper divisors (20661277503460).

25011020135564 is a wasteful number, since it uses less digits than its factorization.

25011020135564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271858914544 (or 271858914542 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 25011020135564 in words is "twenty-five trillion, eleven billion, twenty million, one hundred thirty-five thousand, five hundred sixty-four".