13218700025 has 12 divisors (see below), whose sum is σ = 16410296400. Its totient is φ = 10562632080.

The previous prime is 13218700021. The next prime is 13218700051. The reversal of 13218700025 is 52000781231.

It is not a de Polignac number, because 13218700025 - 2² = 13218700021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13218700021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286295 + ... + 329244.

It is an arithmetic number, because the mean of its divisors is an integer number (1367524700).

Almost surely, 2^13218700025 is an apocalyptic number.

It is an amenable number.

13218700025 is a deficient number, since it is larger than the sum of its proper divisors (3191596375).

13218700025 is an equidigital number, since it uses as much as digits as its factorization.

13218700025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616408 (or 616403 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 13218700025 in words is "thirteen billion, two hundred eighteen million, seven hundred thousand, twenty-five".