25371320 has 64 divisors (see below), whose sum is σ = 62233920. Its totient is φ = 9252864.

The previous prime is 25371287. The next prime is 25371343. The reversal of 25371320 is 2317352.

It is a congruent number.

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, 50189 + ... + 50691.

It is an arithmetic number, because the mean of its divisors is an integer number (972405).

Almost surely, 2^25371320 is an apocalyptic number.

25371320 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 25371320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31116960).

25371320 is an abundant number, since it is smaller than the sum of its proper divisors (36862600).

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

25371320 is a wasteful number, since it uses less digits than its factorization.

25371320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 25371320 is about 5036.9951359913. The cubic root of 25371320 is about 293.8423267954.

Adding to 25371320 its reverse (2317352), we get a palindrome (27688672).

The spelling of 25371320 in words is "twenty-five million, three hundred seventy-one thousand, three hundred twenty".