25680469 has 2 divisors, whose sum is σ = 25680470. Its totient is φ = 25680468.

The previous prime is 25680427. The next prime is 25680481. The reversal of 25680469 is 96408652.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 26244 = 5065^2 + 162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25680469 is a prime.

It is a super-2 number, since 2×25680469² = 1318972976119922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25680169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12840234 + 12840235.

It is an arithmetic number, because the mean of its divisors is an integer number (12840235).

Almost surely, 2^25680469 is an apocalyptic number.

It is an amenable number.

25680469 is a deficient number, since it is larger than the sum of its proper divisors (1).

25680469 is an equidigital number, since it uses as much as digits as its factorization.

25680469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 25680469 is about 5067.5900584005. The cubic root of 25680469 is about 295.0309993279.

The spelling of 25680469 in words is "twenty-five million, six hundred eighty thousand, four hundred sixty-nine".