1250000012500 has 72 divisors (see below), whose sum is σ = 2895035815224. Its totient is φ = 470588160000.

The previous prime is 1250000012497. The next prime is 1250000012567. The reversal of 1250000012500 is 52100000521.

It can be written as a sum of positive squares in 12 ways, for example, as 1116052796356 + 133947216144 = 1056434^2 + 365988^2 .

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 23 ways as a sum of consecutive naturals, for example, 2728677 + ... + 3153676.

It is an arithmetic number, because the mean of its divisors is an integer number (40208830767).

Almost surely, 2^{1250000012500} is an apocalyptic number.

1250000012500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1250000012500 is an abundant number, since it is smaller than the sum of its proper divisors (1645035802724).

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

1250000012500 is an equidigital number, since it uses as much as digits as its factorization.

1250000012500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882399 (or 5882377 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The spelling of 1250000012500 in words is "one trillion, two hundred fifty billion, twelve thousand, five hundred".