25194040 has 64 divisors (see below), whose sum is σ = 60328800. Its totient is φ = 9451008.

The previous prime is 25194023. The next prime is 25194047. The reversal of 25194040 is 4049152.

It is a junction number, because it is equal to n+sod(n) for n = 25193996 and 25194014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25194047) 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, 42627 + ... + 43213.

Almost surely, 2^25194040 is an apocalyptic number.

25194040 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 25194040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30164400).

25194040 is an abundant number, since it is smaller than the sum of its proper divisors (35134760).

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

25194040 is a wasteful number, since it uses less digits than its factorization.

25194040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 25194040 is about 5019.3664938914. The cubic root of 25194040 is about 293.1563268650.

The spelling of 25194040 in words is "twenty-five million, one hundred ninety-four thousand, forty".