25316561300 has 18 divisors (see below), whose sum is σ = 54936938238. Its totient is φ = 10126624480.

The previous prime is 25316561293. The next prime is 25316561329. The reversal of 25316561300 is 316561352.

It can be written as a sum of positive squares in 3 ways, for example, as 7578050704 + 17738510596 = 87052^2 + 133186^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 126582707 + ... + 126582906.

Almost surely, 2^25316561300 is an apocalyptic number.

25316561300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25316561300 is an abundant number, since it is smaller than the sum of its proper divisors (29620376938).

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

25316561300 is a wasteful number, since it uses less digits than its factorization.

25316561300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253165627 (or 253165620 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 25316561300 in words is "twenty-five billion, three hundred sixteen million, five hundred sixty-one thousand, three hundred".