25358220 has 72 divisors (see below), whose sum is σ = 81454464. Its totient is φ = 6363648.

The previous prime is 25358219. The next prime is 25358231. The reversal of 25358220 is 2285352.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1084 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (1131312).

Almost surely, 2^25358220 is an apocalyptic number.

25358220 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 25358220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40727232).

25358220 is an abundant number, since it is smaller than the sum of its proper divisors (56096244).

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

25358220 is a wasteful number, since it uses less digits than its factorization.

25358220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8319 (or 8314 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 25358220 is about 5035.6945896271. The cubic root of 25358220 is about 293.7917447841.

The spelling of 25358220 in words is "twenty-five million, three hundred fifty-eight thousand, two hundred twenty".