12931425 has 36 divisors (see below), whose sum is σ = 24948924. Its totient is φ = 6364800.

The previous prime is 12931423. The next prime is 12931427. The reversal of 12931425 is 52413921.

It is an interprime number because it is at equal distance from previous prime (12931423) and next prime (12931427).

It can be written as a sum of positive squares in 6 ways, for example, as 314721 + 12616704 = 561^2 + 3552^2 .

It is not a de Polignac number, because 12931425 - 2¹ = 12931423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12931423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 715 + ... + 5135.

Almost surely, 2^12931425 is an apocalyptic number.

12931425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12931425 is a deficient number, since it is larger than the sum of its proper divisors (12017499).

12931425 is a wasteful number, since it uses less digits than its factorization.

12931425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450 (or 4442 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12931425 is about 3596.0290599493. The cubic root of 12931425 is about 234.7192966476.

The spelling of 12931425 in words is "twelve million, nine hundred thirty-one thousand, four hundred twenty-five".