25921392 has 120 divisors (see below), whose sum is σ = 79387776. Its totient is φ = 7265664.

The previous prime is 25921387. The next prime is 25921397. The reversal of 25921392 is 29312952.

It is an interprime number because it is at equal distance from previous prime (25921387) and next prime (25921397).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25921397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242203 + ... + 242309.

Almost surely, 2^25921392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25921392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39693888).

25921392 is an abundant number, since it is smaller than the sum of its proper divisors (53466384).

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

25921392 is a wasteful number, since it uses less digits than its factorization.

25921392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 222 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 25921392 is about 5091.3055300188. The cubic root of 25921392 is about 295.9507466137.

The spelling of 25921392 in words is "twenty-five million, nine hundred twenty-one thousand, three hundred ninety-two".