12525431 has 4 divisors (see below), whose sum is σ = 12541200. Its totient is φ = 12509664.

The previous prime is 12525421. The next prime is 12525433. The reversal of 12525431 is 13452521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12525431 - 2⁶ = 12525367 is a prime.

It is a super-2 number, since 2×12525431² = 313772843471522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12525397 and 12525406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12525433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6626 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (3135300).

Almost surely, 2^12525431 is an apocalyptic number.

12525431 is a deficient number, since it is larger than the sum of its proper divisors (15769).

12525431 is an equidigital number, since it uses as much as digits as its factorization.

12525431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15768.

The product of its digits is 1200, while the sum is 23.

The square root of 12525431 is about 3539.1285650567. The cubic root of 12525431 is about 232.2367220617.

Adding to 12525431 its reverse (13452521), we get a palindrome (25977952).

The spelling of 12525431 in words is "twelve million, five hundred twenty-five thousand, four hundred thirty-one".