25040989 has 8 divisors (see below), whose sum is σ = 25764480. Its totient is φ = 24325536.

The previous prime is 25040987. The next prime is 25041001. The reversal of 25040989 is 98904052.

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 25040989 - 2¹ = 25040987 is a prime.

It is a super-2 number, since 2×25040989² = 1254102260196242, 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 (25040987) 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, 4617 + ... + 8449.

It is an arithmetic number, because the mean of its divisors is an integer number (3220560).

Almost surely, 2^25040989 is an apocalyptic number.

It is an amenable number.

25040989 is a deficient number, since it is larger than the sum of its proper divisors (723491).

25040989 is a wasteful number, since it uses less digits than its factorization.

25040989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 25040989 is about 5004.0972212778. The cubic root of 25040989 is about 292.5614899824.

The spelling of 25040989 in words is "twenty-five million, forty thousand, nine hundred eighty-nine".