25295989 has 4 divisors (see below), whose sum is σ = 25350624. Its totient is φ = 25241356.

The previous prime is 25295981. The next prime is 25296023. The reversal of 25295989 is 98959252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25295989 - 2³ = 25295981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25295981) 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, 26617 + ... + 27550.

It is an arithmetic number, because the mean of its divisors is an integer number (6337656).

Almost surely, 2^25295989 is an apocalyptic number.

It is an amenable number.

25295989 is a deficient number, since it is larger than the sum of its proper divisors (54635).

25295989 is an equidigital number, since it uses as much as digits as its factorization.

25295989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54634.

The product of its digits is 583200, while the sum is 49.

The square root of 25295989 is about 5029.5118053346. The cubic root of 25295989 is about 293.5512188270.

The spelling of 25295989 in words is "twenty-five million, two hundred ninety-five thousand, nine hundred eighty-nine".