25204489 has 4 divisors (see below), whose sum is σ = 26687124. Its totient is φ = 23721856.

The previous prime is 25204483. The next prime is 25204499. The reversal of 25204489 is 98440252.

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 10188864 + 15015625 = 3192^2 + 3875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25204489 is a prime.

It is a super-2 number, since 2×25204489² = 1270532531502242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25204483) 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, 741292 + ... + 741325.

It is an arithmetic number, because the mean of its divisors is an integer number (6671781).

Almost surely, 2^25204489 is an apocalyptic number.

It is an amenable number.

25204489 is a deficient number, since it is larger than the sum of its proper divisors (1482635).

25204489 is a wasteful number, since it uses less digits than its factorization.

25204489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482634.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 25204489 is about 5020.4072543968. The cubic root of 25204489 is about 293.1968492409.

The spelling of 25204489 in words is "twenty-five million, two hundred four thousand, four hundred eighty-nine".