25256369 has 8 divisors (see below), whose sum is σ = 26998272. Its totient is φ = 23568160.

The previous prime is 25256359. The next prime is 25256381. The reversal of 25256369 is 96365252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25256369 - 2⁴ = 25256353 is a prime.

It is a super-2 number, since 2×25256369² = 1275768350128322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25256359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12449 + ... + 14334.

It is an arithmetic number, because the mean of its divisors is an integer number (3374784).

Almost surely, 2^25256369 is an apocalyptic number.

It is an amenable number.

25256369 is a deficient number, since it is larger than the sum of its proper divisors (1741903).

25256369 is a wasteful number, since it uses less digits than its factorization.

25256369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26847.

The product of its digits is 97200, while the sum is 38.

The square root of 25256369 is about 5025.5715097887. The cubic root of 25256369 is about 293.3978799361.

The spelling of 25256369 in words is "twenty-five million, two hundred fifty-six thousand, three hundred sixty-nine".