13425899 has 4 divisors (see below), whose sum is σ = 13473960. Its totient is φ = 13377840.

The previous prime is 13425889. The next prime is 13425911. The reversal of 13425899 is 99852431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99852431 = 7 ⋅14264633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13425899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13425809) 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, 23609 + ... + 24170.

It is an arithmetic number, because the mean of its divisors is an integer number (3368490).

Almost surely, 2^13425899 is an apocalyptic number.

13425899 is a deficient number, since it is larger than the sum of its proper divisors (48061).

13425899 is an equidigital number, since it uses as much as digits as its factorization.

13425899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48060.

The product of its digits is 77760, while the sum is 41.

The square root of 13425899 is about 3664.1368697143. The cubic root of 13425899 is about 237.6736989706.

The spelling of 13425899 in words is "thirteen million, four hundred twenty-five thousand, eight hundred ninety-nine".