25945920 has 560 divisors, whose sum is σ = 123919488. Its totient is φ = 4976640.

The previous prime is 25945919. The next prime is 25945937. The reversal of 25945920 is 2954952.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (560).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 390 × 198 × 336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1995834 + ... + 1995846.

Almost surely, 2^25945920 is an apocalyptic number.

25945920 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 25945920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61959744).

25945920 is an abundant number, since it is smaller than the sum of its proper divisors (97973568).

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

25945920 is a wasteful number, since it uses less digits than its factorization.

25945920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 25945920 is about 5093.7137728773. The cubic root of 25945920 is about 296.0440645381.

The spelling of 25945920 in words is "twenty-five million, nine hundred forty-five thousand, nine hundred twenty".