25243020 has 216 divisors, whose sum is σ = 90046320. Its totient is φ = 5702400.

The previous prime is 25243013. The next prime is 25243033. The reversal of 25243020 is 2034252.

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

It is a junction number, because it is equal to n+sod(n) for n = 25242984 and 25243002.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 413790 + ... + 413850.

Almost surely, 2^25243020 is an apocalyptic number.

25243020 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 25243020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45023160).

25243020 is an abundant number, since it is smaller than the sum of its proper divisors (64803300).

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

25243020 is a wasteful number, since it uses less digits than its factorization.

25243020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 101 counting only the distinct ones).

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

The square root of 25243020 is about 5024.2432265964. The cubic root of 25243020 is about 293.3461799929.

Adding to 25243020 its reverse (2034252), we get a palindrome (27277272).

The spelling of 25243020 in words is "twenty-five million, two hundred forty-three thousand, twenty".