25990469 has 2 divisors, whose sum is σ = 25990470. Its totient is φ = 25990468.

The previous prime is 25990457. The next prime is 25990477. The reversal of 25990469 is 96409952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25908100 + 82369 = 5090^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 25990469 - 2²⁰ = 24941893 is a prime.

It is a super-2 number, since 2×25990469² = 1351008957679922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25990429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12995234 + 12995235.

It is an arithmetic number, because the mean of its divisors is an integer number (12995235).

Almost surely, 2^25990469 is an apocalyptic number.

It is an amenable number.

25990469 is a deficient number, since it is larger than the sum of its proper divisors (1).

25990469 is an equidigital number, since it uses as much as digits as its factorization.

25990469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 25990469 is about 5098.0848364852. The cubic root of 25990469 is about 296.2134029934.

The spelling of 25990469 in words is "twenty-five million, nine hundred ninety thousand, four hundred sixty-nine".