12662542525 has 6 divisors (see below), whose sum is σ = 15701552762. Its totient is φ = 10130034000.

The previous prime is 12662542517. The next prime is 12662542547. The reversal of 12662542525 is 52524526621.

It can be written as a sum of positive squares in 3 ways, for example, as 1627880409 + 11034662116 = 40347^2 + 105046^2 .

It is not a de Polignac number, because 12662542525 - 2³ = 12662542517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 253250826 + ... + 253250875.

Almost surely, 2^12662542525 is an apocalyptic number.

It is an amenable number.

12662542525 is a deficient number, since it is larger than the sum of its proper divisors (3039010237).

12662542525 is an equidigital number, since it uses as much as digits as its factorization.

12662542525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506501711 (or 506501706 counting only the distinct ones).

The product of its digits is 288000, while the sum is 40.

The spelling of 12662542525 in words is "twelve billion, six hundred sixty-two million, five hundred forty-two thousand, five hundred twenty-five".