12425557 has 8 divisors (see below), whose sum is σ = 12663000. Its totient is φ = 12190464.

The previous prime is 12425551. The next prime is 12425573. The reversal of 12425557 is 75552421.

It can be written as a sum of positive squares in 4 ways, for example, as 872356 + 11553201 = 934^2 + 3399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12425557 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 (12425551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12793 + ... + 13729.

It is an arithmetic number, because the mean of its divisors is an integer number (1582875).

Almost surely, 2^12425557 is an apocalyptic number.

It is an amenable number.

12425557 is a deficient number, since it is larger than the sum of its proper divisors (237443).

12425557 is an equidigital number, since it uses as much as digits as its factorization.

12425557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175.

The product of its digits is 14000, while the sum is 31.

The square root of 12425557 is about 3524.9903545967. The cubic root of 12425557 is about 231.6178123322.

Adding to 12425557 its reverse (75552421), we get a palindrome (87977978).

The spelling of 12425557 in words is "twelve million, four hundred twenty-five thousand, five hundred fifty-seven".