13725551 has 8 divisors (see below), whose sum is σ = 16020480. Its totient is φ = 11514168.

The previous prime is 13725527. The next prime is 13725559. The reversal of 13725551 is 15552731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13725551 - 2⁶ = 13725487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13725559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20531 + ... + 21188.

It is an arithmetic number, because the mean of its divisors is an integer number (2002560).

Almost surely, 2^13725551 is an apocalyptic number.

13725551 is a deficient number, since it is larger than the sum of its proper divisors (2294929).

13725551 is an equidigital number, since it uses as much as digits as its factorization.

13725551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41773.

The product of its digits is 5250, while the sum is 29.

The square root of 13725551 is about 3704.8010742819. The cubic root of 13725551 is about 239.4289141559.

The spelling of 13725551 in words is "thirteen million, seven hundred twenty-five thousand, five hundred fifty-one".