25996457 has 2 divisors, whose sum is σ = 25996458. Its totient is φ = 25996456.

The previous prime is 25996433. The next prime is 25996471. The reversal of 25996457 is 75469952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22477081 + 3519376 = 4741^2 + 1876^2 .

It is a cyclic number.

It is not a de Polignac number, because 25996457 - 2⁶ = 25996393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25996057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12998228 + 12998229.

It is an arithmetic number, because the mean of its divisors is an integer number (12998229).

Almost surely, 2^25996457 is an apocalyptic number.

It is an amenable number.

25996457 is a deficient number, since it is larger than the sum of its proper divisors (1).

25996457 is an equidigital number, since it uses as much as digits as its factorization.

25996457 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 25996457 is about 5098.6720820229. The cubic root of 25996457 is about 296.2361496608.

The spelling of 25996457 in words is "twenty-five million, nine hundred ninety-six thousand, four hundred fifty-seven".