25956947 has 2 divisors, whose sum is σ = 25956948. Its totient is φ = 25956946.

The previous prime is 25956929. The next prime is 25956971. The reversal of 25956947 is 74965952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25956947 - 2⁸ = 25956691 is a prime.

It is not a weakly prime, because it can be changed into another prime (25956347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12978473 + 12978474.

It is an arithmetic number, because the mean of its divisors is an integer number (12978474).

Almost surely, 2^25956947 is an apocalyptic number.

25956947 is a deficient number, since it is larger than the sum of its proper divisors (1).

25956947 is an equidigital number, since it uses as much as digits as its factorization.

25956947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 25956947 is about 5094.7960705017. The cubic root of 25956947 is about 296.0859981130.

The spelling of 25956947 in words is "twenty-five million, nine hundred fifty-six thousand, nine hundred forty-seven".