13725697 has 4 divisors (see below), whose sum is σ = 13899520. Its totient is φ = 13551876.

The previous prime is 13725661. The next prime is 13725709. The reversal of 13725697 is 79652731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13725697 - 2²³ = 5337089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13725617) 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, 86793 + ... + 86950.

It is an arithmetic number, because the mean of its divisors is an integer number (3474880).

It is a Proth number, since it is equal to 3351 ⋅ 2¹² + 1 and 3351 < 2¹².

Almost surely, 2^13725697 is an apocalyptic number.

It is an amenable number.

13725697 is a deficient number, since it is larger than the sum of its proper divisors (173823).

13725697 is an equidigital number, since it uses as much as digits as its factorization.

13725697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173822.

The product of its digits is 79380, while the sum is 40.

The square root of 13725697 is about 3704.8207783913. The cubic root of 13725697 is about 239.4297630957.

The spelling of 13725697 in words is "thirteen million, seven hundred twenty-five thousand, six hundred ninety-seven".