13725559 has 2 divisors, whose sum is σ = 13725560. Its totient is φ = 13725558.

The previous prime is 13725527. The next prime is 13725587. The reversal of 13725559 is 95552731.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (95552731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13725559 - 2⁵ = 13725527 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13725259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6862779 + 6862780.

It is an arithmetic number, because the mean of its divisors is an integer number (6862780).

Almost surely, 2^13725559 is an apocalyptic number.

13725559 is a deficient number, since it is larger than the sum of its proper divisors (1).

13725559 is an equidigital number, since it uses as much as digits as its factorization.

13725559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47250, while the sum is 37.

The square root of 13725559 is about 3704.8021539618. The cubic root of 13725559 is about 239.4289606733.

The spelling of 13725559 in words is "thirteen million, seven hundred twenty-five thousand, five hundred fifty-nine".