25155442300 has 144 divisors (see below), whose sum is σ = 59568499872. Its totient is φ = 9184665600.

The previous prime is 25155442289. The next prime is 25155442327. The reversal of 25155442300 is 324455152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7568439 + ... + 7571761.

It is an arithmetic number, because the mean of its divisors is an integer number (413670138).

Almost surely, 2^25155442300 is an apocalyptic number.

25155442300 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 25155442300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29784249936).

25155442300 is an abundant number, since it is smaller than the sum of its proper divisors (34413057572).

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

25155442300 is a wasteful number, since it uses less digits than its factorization.

25155442300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488 (or 3481 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 25155442300 its reverse (324455152), we get a palindrome (25479897452).

The spelling of 25155442300 in words is "twenty-five billion, one hundred fifty-five million, four hundred forty-two thousand, three hundred".