25012240000 has 320 divisors, whose sum is σ = 69611842080. Its totient is φ = 8870400000.

The previous prime is 25012239997. The next prime is 25012240003. The reversal of 25012240000 is 4221052.

It is an interprime number because it is at equal distance from previous prime (25012239997) and next prime (25012240003).

It is a tau number, because it is divible by the number of its divisors (320).

It is a super-2 number, since 2×25012240000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (25012240003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37839670 + ... + 37840330.

Almost surely, 2^25012240000 is an apocalyptic number.

25012240000 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 25012240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34805921040).

25012240000 is an abundant number, since it is smaller than the sum of its proper divisors (44599602080).

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

25012240000 is an equidigital number, since it uses as much as digits as its factorization.

25012240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 25012240000 its reverse (4221052), we get a palindrome (25016461052).

The spelling of 25012240000 in words is "twenty-five billion, twelve million, two hundred forty thousand".