25474940 has 48 divisors (see below), whose sum is σ = 56052864. Its totient is φ = 9715200.

The previous prime is 25474937. The next prime is 25474949. The reversal of 25474940 is 4947452.

It is a self number, because there is not a number n which added to its sum of digits gives 25474940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25474949) 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, 38210 + ... + 38870.

It is an arithmetic number, because the mean of its divisors is an integer number (1167768).

Almost surely, 2^25474940 is an apocalyptic number.

25474940 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 25474940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28026432).

25474940 is an abundant number, since it is smaller than the sum of its proper divisors (30577924).

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

25474940 is a wasteful number, since it uses less digits than its factorization.

25474940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 25474940 is about 5047.2705495149. The cubic root of 25474940 is about 294.2418144122.

The spelling of 25474940 in words is "twenty-five million, four hundred seventy-four thousand, nine hundred forty".