25200020 has 24 divisors (see below), whose sum is σ = 53015424. Its totient is φ = 10061856.

The previous prime is 25200013. The next prime is 25200029. The reversal of 25200020 is 2000252.

It is a junction number, because it is equal to n+sod(n) for n = 25199974 and 25200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25200029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18689 + ... + 19991.

It is an arithmetic number, because the mean of its divisors is an integer number (2208976).

Almost surely, 2^25200020 is an apocalyptic number.

25200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25200020 is an abundant number, since it is smaller than the sum of its proper divisors (27815404).

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

25200020 is a wasteful number, since it uses less digits than its factorization.

25200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 25200020 is about 5019.9621512517. The cubic root of 25200020 is about 293.1795193363.

Adding to 25200020 its reverse (2000252), we get a palindrome (27200272).

The spelling of 25200020 in words is "twenty-five million, two hundred thousand, twenty".