25358940 has 96 divisors (see below), whose sum is σ = 79672320. Its totient is φ = 6696000.

The previous prime is 25358929. The next prime is 25358941. The reversal of 25358940 is 4985352.

25358940 is a `hidden beast` number, since 2 + 535 + 89 + 40 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 25358895 and 25358904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25358941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81385 + ... + 81695.

It is an arithmetic number, because the mean of its divisors is an integer number (829920).

Almost surely, 2^25358940 is an apocalyptic number.

25358940 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 25358940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39836160).

25358940 is an abundant number, since it is smaller than the sum of its proper divisors (54313380).

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

25358940 is a wasteful number, since it uses less digits than its factorization.

25358940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 25358940 is about 5035.7660787610. The cubic root of 25358940 is about 293.7945253165.

The spelling of 25358940 in words is "twenty-five million, three hundred fifty-eight thousand, nine hundred forty".