25230920 has 96 divisors (see below), whose sum is σ = 67367160. Its totient is φ = 8448000.

The previous prime is 25230901. The next prime is 25230967. The reversal of 25230920 is 2903252.

It can be written as a sum of positive squares in 4 ways, for example, as 22791076 + 2439844 = 4774^2 + 1562^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62720 + ... + 63120.

Almost surely, 2^25230920 is an apocalyptic number.

25230920 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 25230920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33683580).

25230920 is an abundant number, since it is smaller than the sum of its proper divisors (42136240).

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

25230920 is a wasteful number, since it uses less digits than its factorization.

25230920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 25230920 is about 5023.0389208128. The cubic root of 25230920 is about 293.2993016074.

The spelling of 25230920 in words is "twenty-five million, two hundred thirty thousand, nine hundred twenty".