25448840 has 32 divisors (see below), whose sum is σ = 57576960. Its totient is φ = 10123200.

The previous prime is 25448837. The next prime is 25448849. The reversal of 25448840 is 4884452.

It is a self number, because there is not a number n which added to its sum of digits gives 25448840.

It is not an unprimeable number, because it can be changed into a prime (25448849) 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, 5975 + ... + 9305.

It is an arithmetic number, because the mean of its divisors is an integer number (1799280).

Almost surely, 2^25448840 is an apocalyptic number.

25448840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25448840 is an abundant number, since it is smaller than the sum of its proper divisors (32128120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25448840 is a wasteful number, since it uses less digits than its factorization.

25448840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533 (or 3529 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

The square root of 25448840 is about 5044.6843310558. The cubic root of 25448840 is about 294.1412929381.

It can be divided in two parts, 254 and 48840, that added together give a palindrome (49094).

The spelling of 25448840 in words is "twenty-five million, four hundred forty-eight thousand, eight hundred forty".