13925999 has 4 divisors (see below), whose sum is σ = 14069664. Its totient is φ = 13782336.

The previous prime is 13925939. The next prime is 13926013. The reversal of 13925999 is 99952931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99952931 = 13 ⋅7688687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13925999 is a prime.

It is a super-3 number, since 3×13925999³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13925939) 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, 71687 + ... + 71880.

It is an arithmetic number, because the mean of its divisors is an integer number (3517416).

Almost surely, 2^13925999 is an apocalyptic number.

13925999 is a deficient number, since it is larger than the sum of its proper divisors (143665).

13925999 is an equidigital number, since it uses as much as digits as its factorization.

13925999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143664.

The product of its digits is 196830, while the sum is 47.

The square root of 13925999 is about 3731.7554850231. The cubic root of 13925999 is about 240.5888261583.

The spelling of 13925999 in words is "thirteen million, nine hundred twenty-five thousand, nine hundred ninety-nine".