25574820 has 48 divisors (see below), whose sum is σ = 72602880. Its totient is φ = 6725376.

The previous prime is 25574767. The next prime is 25574821. The reversal of 25574820 is 2847552.

It is not an unprimeable number, because it can be changed into a prime (25574821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461 + ... + 7299.

It is an arithmetic number, because the mean of its divisors is an integer number (1512560).

Almost surely, 2^25574820 is an apocalyptic number.

25574820 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 25574820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36301440).

25574820 is an abundant number, since it is smaller than the sum of its proper divisors (47028060).

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

25574820 is a wasteful number, since it uses less digits than its factorization.

25574820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5924 (or 5922 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 25574820 is about 5057.1553268611. The cubic root of 25574820 is about 294.6258591165.

The spelling of 25574820 in words is "twenty-five million, five hundred seventy-four thousand, eight hundred twenty".