12315142525 has 12 divisors (see below), whose sum is σ = 17452316512. Its totient is φ = 8444669040.

The previous prime is 12315142501. The next prime is 12315142549. The reversal of 12315142525 is 52524151321.

It is an interprime number because it is at equal distance from previous prime (12315142501) and next prime (12315142549).

It is not a de Polignac number, because 12315142525 - 2²¹ = 12313045373 is a prime.

It is a super-2 number, since 2×12315142525² (a number of 21 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 35185947 + ... + 35186296.

Almost surely, 2^12315142525 is an apocalyptic number.

It is an amenable number.

12315142525 is a deficient number, since it is larger than the sum of its proper divisors (5137173987).

12315142525 is an equidigital number, since it uses as much as digits as its factorization.

12315142525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70372260 (or 70372255 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

Adding to 12315142525 its reverse (52524151321), we get a palindrome (64839293846).

The spelling of 12315142525 in words is "twelve billion, three hundred fifteen million, one hundred forty-two thousand, five hundred twenty-five".