12662525 has 6 divisors (see below), whose sum is σ = 15701562. Its totient is φ = 10130000.

The previous prime is 12662509. The next prime is 12662527. The reversal of 12662525 is 52526621.

It can be written as a sum of positive squares in 3 ways, for example, as 3740356 + 8922169 = 1934^2 + 2987^2 .

It is not a de Polignac number, because 12662525 - 2⁴ = 12662509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12662527) 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, 253226 + ... + 253275.

It is an arithmetic number, because the mean of its divisors is an integer number (2616927).

Almost surely, 2^12662525 is an apocalyptic number.

It is an amenable number.

12662525 is a deficient number, since it is larger than the sum of its proper divisors (3039037).

12662525 is an equidigital number, since it uses as much as digits as its factorization.

12662525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506511 (or 506506 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 12662525 is about 3558.4441825045. Note that the first 3 decimals coincide. The cubic root of 12662525 is about 233.0809459218.

The spelling of 12662525 in words is "twelve million, six hundred sixty-two thousand, five hundred twenty-five".