25003536240 has 160 divisors (see below), whose sum is σ = 78275704320. Its totient is φ = 6602165248.

The previous prime is 25003536221. The next prime is 25003536247. The reversal of 25003536240 is 4263530052.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25003536198 and 25003536207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25003536247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11297374 + ... + 11299586.

It is an arithmetic number, because the mean of its divisors is an integer number (489223152).

Almost surely, 2^25003536240 is an apocalyptic number.

25003536240 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 25003536240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39137852160).

25003536240 is an abundant number, since it is smaller than the sum of its proper divisors (53272168080).

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

25003536240 is a wasteful number, since it uses less digits than its factorization.

25003536240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671 (or 2665 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The spelling of 25003536240 in words is "twenty-five billion, three million, five hundred thirty-six thousand, two hundred forty".