25902497 has 2 divisors, whose sum is σ = 25902498. Its totient is φ = 25902496.

The previous prime is 25902473. The next prime is 25902521. The reversal of 25902497 is 79420952.

It is a balanced prime because it is at equal distance from previous prime (25902473) and next prime (25902521).

It can be written as a sum of positive squares in only one way, i.e., 22648081 + 3254416 = 4759^2 + 1804^2 .

It is a cyclic number.

It is not a de Polignac number, because 25902497 - 2⁸ = 25902241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25902497.

It is not a weakly prime, because it can be changed into another prime (25902427) 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, 12951248 + 12951249.

It is an arithmetic number, because the mean of its divisors is an integer number (12951249).

Almost surely, 2^25902497 is an apocalyptic number.

It is an amenable number.

25902497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25902497 is an equidigital number, since it uses as much as digits as its factorization.

25902497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 25902497 is about 5089.4495773119. The cubic root of 25902497 is about 295.8788195526.

The spelling of 25902497 in words is "twenty-five million, nine hundred two thousand, four hundred ninety-seven".