13978124025 has 24 divisors (see below), whose sum is σ = 23120201760. Its totient is φ = 7451869440.

The previous prime is 13978124021. The next prime is 13978124087. The reversal of 13978124025 is 52042187931.

It is not a de Polignac number, because 13978124025 - 2² = 13978124021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13978124021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146529 + ... + 222321.

It is an arithmetic number, because the mean of its divisors is an integer number (963341740).

Almost surely, 2^13978124025 is an apocalyptic number.

13978124025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13978124025 is a deficient number, since it is larger than the sum of its proper divisors (9142077735).

13978124025 is a wasteful number, since it uses less digits than its factorization.

13978124025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78265 (or 78260 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 13978124025 in words is "thirteen billion, nine hundred seventy-eight million, one hundred twenty-four thousand, twenty-five".