25959340 has 72 divisors (see below), whose sum is σ = 63546336. Its totient is φ = 8870400.

The previous prime is 25959319. The next prime is 25959359. The reversal of 25959340 is 4395952.

It is a self number, because there is not a number n which added to its sum of digits gives 25959340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40825 + ... + 41455.

It is an arithmetic number, because the mean of its divisors is an integer number (882588).

Almost surely, 2^25959340 is an apocalyptic number.

25959340 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 25959340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31773168).

25959340 is an abundant number, since it is smaller than the sum of its proper divisors (37586996).

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

25959340 is a wasteful number, since it uses less digits than its factorization.

25959340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 25959340 is about 5095.0309125657. The cubic root of 25959340 is about 296.0950966666.

It can be divided in two parts, 2595 and 9340, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 25959340 in words is "twenty-five million, nine hundred fifty-nine thousand, three hundred forty".