25098220 has 48 divisors (see below), whose sum is σ = 62189568. Its totient is φ = 8326080.

The previous prime is 25098209. The next prime is 25098233. The reversal of 25098220 is 2289052.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1449 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (1295616).

Almost surely, 2^25098220 is an apocalyptic number.

25098220 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 25098220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31094784).

25098220 is an abundant number, since it is smaller than the sum of its proper divisors (37091348).

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

25098220 is a wasteful number, since it uses less digits than its factorization.

25098220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830 (or 5828 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 25098220 is about 5009.8123717361. The cubic root of 25098220 is about 292.7842027917.

The spelling of 25098220 in words is "twenty-five million, ninety-eight thousand, two hundred twenty".