25804740 has 48 divisors (see below), whose sum is σ = 77813568. Its totient is φ = 6351744.

The previous prime is 25804729. The next prime is 25804763. The reversal of 25804740 is 4740852.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25804698 and 25804707.

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, 15762 + ... + 17321.

It is an arithmetic number, because the mean of its divisors is an integer number (1621116).

Almost surely, 2^25804740 is an apocalyptic number.

25804740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25804740 is an abundant number, since it is smaller than the sum of its proper divisors (52008828).

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

25804740 is a wasteful number, since it uses less digits than its factorization.

25804740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33108 (or 33106 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 25804740 is about 5079.8366115457. The cubic root of 25804740 is about 295.5061310394.

The spelling of 25804740 in words is "twenty-five million, eight hundred four thousand, seven hundred forty".