25975040 has 144 divisors (see below), whose sum is σ = 76919808. Its totient is φ = 8183808.

The previous prime is 25975009. The next prime is 25975049. The reversal of 25975040 is 4057952.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 25974988 and 25975006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25975049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116369 + ... + 116591.

Almost surely, 2^25975040 is an apocalyptic number.

25975040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25975040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38459904).

25975040 is an abundant number, since it is smaller than the sum of its proper divisors (50944768).

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

25975040 is a wasteful number, since it uses less digits than its factorization.

25975040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 25975040 is about 5096.5713965371. The cubic root of 25975040 is about 296.1547766144.

The spelling of 25975040 in words is "twenty-five million, nine hundred seventy-five thousand, forty".