25204133240 has 128 divisors (see below), whose sum is σ = 69520550400. Its totient is φ = 8092254720.

The previous prime is 25204133233. The next prime is 25204133243. The reversal of 25204133240 is 4233140252.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25204133243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35771 + ... + 227349.

It is an arithmetic number, because the mean of its divisors is an integer number (543129300).

Almost surely, 2^25204133240 is an apocalyptic number.

25204133240 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 25204133240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34760275200).

25204133240 is an abundant number, since it is smaller than the sum of its proper divisors (44316417160).

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

25204133240 is a wasteful number, since it uses less digits than its factorization.

25204133240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191637 (or 191633 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 25204133240 its reverse (4233140252), we get a palindrome (29437273492).

The spelling of 25204133240 in words is "twenty-five billion, two hundred four million, one hundred thirty-three thousand, two hundred forty".