25200052400 has 60 divisors (see below), whose sum is σ = 60559398504. Its totient is φ = 10077312000.

The previous prime is 25200052363. The next prime is 25200052403. The reversal of 25200052400 is 425000252.

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

It is not an unprimeable number, because it can be changed into a prime (25200052403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2202695 + ... + 2214105.

Almost surely, 2^25200052400 is an apocalyptic number.

25200052400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25200052400 is an abundant number, since it is smaller than the sum of its proper divisors (35359346104).

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

25200052400 is a wasteful number, since it uses less digits than its factorization.

25200052400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16950 (or 16939 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

Adding to 25200052400 its reverse (425000252), we get a palindrome (25625052652).

The spelling of 25200052400 in words is "twenty-five billion, two hundred million, fifty-two thousand, four hundred".