25992493 has 2 divisors, whose sum is σ = 25992494. Its totient is φ = 25992492.

The previous prime is 25992487. The next prime is 25992517. The reversal of 25992493 is 39429952.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25532809 + 459684 = 5053^2 + 678^2 .

It is a cyclic number.

It is not a de Polignac number, because 25992493 - 2²¹ = 23895341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25992403) 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, 12996246 + 12996247.

It is an arithmetic number, because the mean of its divisors is an integer number (12996247).

Almost surely, 2^25992493 is an apocalyptic number.

It is an amenable number.

25992493 is a deficient number, since it is larger than the sum of its proper divisors (1).

25992493 is an equidigital number, since it uses as much as digits as its factorization.

25992493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The square root of 25992493 is about 5098.2833385366. The cubic root of 25992493 is about 296.2210919706.

The spelling of 25992493 in words is "twenty-five million, nine hundred ninety-two thousand, four hundred ninety-three".