12551145025 has 6 divisors (see below), whose sum is σ = 15563419862. Its totient is φ = 10040916000.

The previous prime is 12551145023. The next prime is 12551145071. The reversal of 12551145025 is 52054115521.

It can be written as a sum of positive squares in 3 ways, for example, as 3560769 + 12547584256 = 1887^2 + 112016^2 .

It is not a de Polignac number, because 12551145025 - 2¹ = 12551145023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12551145023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251022876 + ... + 251022925.

Almost surely, 2^12551145025 is an apocalyptic number.

It is an amenable number.

12551145025 is a deficient number, since it is larger than the sum of its proper divisors (3012274837).

12551145025 is an equidigital number, since it uses as much as digits as its factorization.

12551145025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502045811 (or 502045806 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 12551145025 in words is "twelve billion, five hundred fifty-one million, one hundred forty-five thousand, twenty-five".