25002072500 has 60 divisors (see below), whose sum is σ = 54711964692. Its totient is φ = 9993984000.

The previous prime is 25002072461. The next prime is 25002072509. The reversal of 25002072500 is 527020052.

It can be written as a sum of positive squares in 10 ways, for example, as 24937463056 + 64609444 = 157916^2 + 8038^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25002072509) 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 19 ways as a sum of consecutive naturals, for example, 5280134 + ... + 5284866.

Almost surely, 2^25002072500 is an apocalyptic number.

25002072500 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 25002072500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27355982346).

25002072500 is an abundant number, since it is smaller than the sum of its proper divisors (29709892192).

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

25002072500 is a wasteful number, since it uses less digits than its factorization.

25002072500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6870 (or 6853 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

Adding to 25002072500 its reverse (527020052), we get a palindrome (25529092552).

The spelling of 25002072500 in words is "twenty-five billion, two million, seventy-two thousand, five hundred".