15256427 has 2 divisors, whose sum is σ = 15256428. Its totient is φ = 15256426.

The previous prime is 15256399. The next prime is 15256447. The reversal of 15256427 is 72465251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15256427 - 2⁶ = 15256363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15256393 and 15256402.

It is not a weakly prime, because it can be changed into another prime (15256447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7628213 + 7628214.

It is an arithmetic number, because the mean of its divisors is an integer number (7628214).

Almost surely, 2^15256427 is an apocalyptic number.

15256427 is a deficient number, since it is larger than the sum of its proper divisors (1).

15256427 is an equidigital number, since it uses as much as digits as its factorization.

15256427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 32.

The square root of 15256427 is about 3905.9476442984. The cubic root of 15256427 is about 248.0186152780.

The spelling of 15256427 in words is "fifteen million, two hundred fifty-six thousand, four hundred twenty-seven".