12651525025 has 12 divisors (see below), whose sum is σ = 15709316092. Its totient is φ = 10107397440.

The previous prime is 12651525023. The next prime is 12651525043. The reversal of 12651525025 is 52052515621.

It can be written as a sum of positive squares in 6 ways, for example, as 523128384 + 12128396641 = 22872^2 + 110129^2 .

It is not a de Polignac number, because 12651525025 - 2¹ = 12651525023 is a prime.

It is a super-2 number, since 2×12651525025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12651525023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326874 + ... + 363523.

Almost surely, 2^12651525025 is an apocalyptic number.

It is an amenable number.

12651525025 is a deficient number, since it is larger than the sum of its proper divisors (3057791067).

12651525025 is an equidigital number, since it uses as much as digits as its factorization.

12651525025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691140 (or 691135 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 12651525025 in words is "twelve billion, six hundred fifty-one million, five hundred twenty-five thousand, twenty-five".