25036220 has 48 divisors (see below), whose sum is σ = 59222016. Its totient is φ = 8808000.

The previous prime is 25036217. The next prime is 25036229. The reversal of 25036220 is 2263052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 25036192 and 25036201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25036229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4985 + ... + 8655.

It is an arithmetic number, because the mean of its divisors is an integer number (1233792).

Almost surely, 2^25036220 is an apocalyptic number.

25036220 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 25036220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29611008).

25036220 is an abundant number, since it is smaller than the sum of its proper divisors (34185796).

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

25036220 is a wasteful number, since it uses less digits than its factorization.

25036220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722 (or 3720 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 25036220 is about 5003.6206890611. The cubic root of 25036220 is about 292.5429162441.

Adding to 25036220 its reverse (2263052), we get a palindrome (27299272).

The spelling of 25036220 in words is "twenty-five million, thirty-six thousand, two hundred twenty".