12507357 has 4 divisors (see below), whose sum is σ = 16676480. Its totient is φ = 8338236.

The previous prime is 12507347. The next prime is 12507371. The reversal of 12507357 is 75370521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75370521 = 3 ⋅25123507.

It is not a de Polignac number, because 12507357 - 2¹⁵ = 12474589 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 (12507317) 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, 2084557 + ... + 2084562.

It is an arithmetic number, because the mean of its divisors is an integer number (4169120).

Almost surely, 2^12507357 is an apocalyptic number.

It is an amenable number.

12507357 is a deficient number, since it is larger than the sum of its proper divisors (4169123).

12507357 is an equidigital number, since it uses as much as digits as its factorization.

12507357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169122.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 12507357 is about 3536.5741898057. The cubic root of 12507357 is about 232.1249636431.

Adding to 12507357 its reverse (75370521), we get a palindrome (87877878).

The spelling of 12507357 in words is "twelve million, five hundred seven thousand, three hundred fifty-seven".