25957340 has 48 divisors (see below), whose sum is σ = 57734208. Its totient is φ = 9782784.

The previous prime is 25957319. The next prime is 25957367. The reversal of 25957340 is 4375952.

It is a self number, because there is not a number n which added to its sum of digits gives 25957340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33194 + ... + 33966.

It is an arithmetic number, because the mean of its divisors is an integer number (1202796).

Almost surely, 2^25957340 is an apocalyptic number.

25957340 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 25957340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28867104).

25957340 is an abundant number, since it is smaller than the sum of its proper divisors (31776868).

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

25957340 is a wasteful number, since it uses less digits than its factorization.

25957340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 25957340 is about 5094.8346391223. The cubic root of 25957340 is about 296.0874923977.

The spelling of 25957340 in words is "twenty-five million, nine hundred fifty-seven thousand, three hundred forty".