25320204 has 144 divisors (see below), whose sum is σ = 80720640. Its totient is φ = 6514560.

The previous prime is 25320199. The next prime is 25320209. The reversal of 25320204 is 40202352.

It is an interprime number because it is at equal distance from previous prime (25320199) and next prime (25320209).

It is a super-2 number, since 2×25320204² = 1282225461203232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (25320209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 193219 + ... + 193349.

It is an arithmetic number, because the mean of its divisors is an integer number (560560).

Almost surely, 2^25320204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25320204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40360320).

25320204 is an abundant number, since it is smaller than the sum of its proper divisors (55400436).

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

25320204 is a wasteful number, since it uses less digits than its factorization.

25320204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 25320204 is about 5031.9185208030. The cubic root of 25320204 is about 293.6448578590.

Adding to 25320204 its reverse (40202352), we get a palindrome (65522556).

The spelling of 25320204 in words is "twenty-five million, three hundred twenty thousand, two hundred four".