25020324240 has 40 divisors (see below), whose sum is σ = 77563005888. Its totient is φ = 6672086400.

The previous prime is 25020324233. The next prime is 25020324247. The reversal of 25020324240 is 4242302052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25020324233) and next prime (25020324247).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 25020324240.

It is not an unprimeable number, because it can be changed into a prime (25020324247) 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, 52125436 + ... + 52125915.

Almost surely, 2^25020324240 is an apocalyptic number.

25020324240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25020324240 is an abundant number, since it is smaller than the sum of its proper divisors (52542681648).

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

25020324240 is a wasteful number, since it uses less digits than its factorization.

25020324240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104251367 (or 104251361 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

Adding to 25020324240 its reverse (4242302052), we get a palindrome (29262626292).

The spelling of 25020324240 in words is "twenty-five billion, twenty million, three hundred twenty-four thousand, two hundred forty".