25708469 has 4 divisors (see below), whose sum is σ = 25736844. Its totient is φ = 25680096.

The previous prime is 25708447. The next prime is 25708489. The reversal of 25708469 is 96480752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6436369 + 19272100 = 2537^2 + 4390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25708469 is a prime.

It is a super-2 number, since 2×25708469² = 1321850756647922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25708429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12782 + ... + 14655.

It is an arithmetic number, because the mean of its divisors is an integer number (6434211).

Almost surely, 2^25708469 is an apocalyptic number.

It is an amenable number.

25708469 is a deficient number, since it is larger than the sum of its proper divisors (28375).

25708469 is an equidigital number, since it uses as much as digits as its factorization.

25708469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28374.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 25708469 is about 5070.3519601700. The cubic root of 25708469 is about 295.1381867195.

The spelling of 25708469 in words is "twenty-five million, seven hundred eight thousand, four hundred sixty-nine".