13725931 has 2 divisors, whose sum is σ = 13725932. Its totient is φ = 13725930.

The previous prime is 13725913. The next prime is 13725941. The reversal of 13725931 is 13952731.

Together with previous prime (13725913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13725931 - 2¹¹ = 13723883 is a prime.

It is a super-2 number, since 2×13725931² = 376802363633522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13725893 and 13725902.

It is not a weakly prime, because it can be changed into another prime (13725911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6862965 + 6862966.

It is an arithmetic number, because the mean of its divisors is an integer number (6862966).

Almost surely, 2^13725931 is an apocalyptic number.

13725931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13725931 is an equidigital number, since it uses as much as digits as its factorization.

13725931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 31.

The square root of 13725931 is about 3704.8523587317. The cubic root of 13725931 is about 239.4311237126.

The spelling of 13725931 in words is "thirteen million, seven hundred twenty-five thousand, nine hundred thirty-one".