25289885 has 8 divisors (see below), whose sum is σ = 31394520. Its totient is φ = 19534144.

The previous prime is 25289879. The next prime is 25289917. The reversal of 25289885 is 58898252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7540516 + 17749369 = 2746^2 + 4213^2 .

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 25289885 - 2⁶ = 25289821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87062 + ... + 87351.

It is an arithmetic number, because the mean of its divisors is an integer number (3924315).

Almost surely, 2^25289885 is an apocalyptic number.

It is an amenable number.

25289885 is a deficient number, since it is larger than the sum of its proper divisors (6104635).

25289885 is a wasteful number, since it uses less digits than its factorization.

25289885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174447.

The product of its digits is 460800, while the sum is 47.

The square root of 25289885 is about 5028.9049503843. The cubic root of 25289885 is about 293.5276053233.

The spelling of 25289885 in words is "twenty-five million, two hundred eighty-nine thousand, eight hundred eighty-five".