25448985 has 40 divisors (see below), whose sum is σ = 47114496. Its totient is φ = 13128480.

The previous prime is 25448953. The next prime is 25448989. The reversal of 25448985 is 58984452.

It is not a de Polignac number, because 25448985 - 2⁵ = 25448953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25448985.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25448989) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11542 + ... + 13568.

Almost surely, 2^25448985 is an apocalyptic number.

It is an amenable number.

25448985 is a deficient number, since it is larger than the sum of its proper divisors (21665511).

25448985 is a wasteful number, since it uses less digits than its factorization.

25448985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075 (or 2066 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 25448985 is about 5044.6987025986. The cubic root of 25448985 is about 294.1418515806.

The spelling of 25448985 in words is "twenty-five million, four hundred forty-eight thousand, nine hundred eighty-five".