25350220 has 48 divisors (see below), whose sum is σ = 62270208. Its totient is φ = 8487360.

The previous prime is 25350211. The next prime is 25350251. The reversal of 25350220 is 2205352.

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, 3915 + ... + 8125.

It is an arithmetic number, because the mean of its divisors is an integer number (1297296).

Almost surely, 2^25350220 is an apocalyptic number.

25350220 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 25350220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31135104).

25350220 is an abundant number, since it is smaller than the sum of its proper divisors (36919988).

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

25350220 is a wasteful number, since it uses less digits than its factorization.

25350220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270 (or 4268 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 25350220 is about 5034.9001976206. The cubic root of 25350220 is about 293.7608464382.

Adding to 25350220 its reverse (2205352), we get a palindrome (27555572).

The spelling of 25350220 in words is "twenty-five million, three hundred fifty thousand, two hundred twenty".