25910957 has 2 divisors, whose sum is σ = 25910958. Its totient is φ = 25910956.

The previous prime is 25910939. The next prime is 25911001. The reversal of 25910957 is 75901952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22335076 + 3575881 = 4726^2 + 1891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25910957 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25910957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25910257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12955478 + 12955479.

It is an arithmetic number, because the mean of its divisors is an integer number (12955479).

Almost surely, 2^25910957 is an apocalyptic number.

It is an amenable number.

25910957 is a deficient number, since it is larger than the sum of its proper divisors (1).

25910957 is an equidigital number, since it uses as much as digits as its factorization.

25910957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 25910957 is about 5090.2806405934. The cubic root of 25910957 is about 295.9110283180.

The spelling of 25910957 in words is "twenty-five million, nine hundred ten thousand, nine hundred fifty-seven".