25220930 has 32 divisors (see below), whose sum is σ = 52310016. Its totient is φ = 8576064.

The previous prime is 25220929. The next prime is 25220941. The reversal of 25220930 is 3902252.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25220896 and 25220905.

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, 7472 + ... + 10308.

It is an arithmetic number, because the mean of its divisors is an integer number (1634688).

Almost surely, 2^25220930 is an apocalyptic number.

25220930 is an abundant number, since it is smaller than the sum of its proper divisors (27089086).

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

25220930 is a wasteful number, since it uses less digits than its factorization.

25220930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978.

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

The square root of 25220930 is about 5022.0444044234. The cubic root of 25220930 is about 293.2605865861.

The spelling of 25220930 in words is "twenty-five million, two hundred twenty thousand, nine hundred thirty".