12508357 has 4 divisors (see below), whose sum is σ = 12606976. Its totient is φ = 12409740.

The previous prime is 12508351. The next prime is 12508361. The reversal of 12508357 is 75380521.

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: 75380521 = 2441 ⋅30881.

It is a cyclic number.

It is not a de Polignac number, because 12508357 - 2⁷ = 12508229 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 (12508351) 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, 49119 + ... + 49372.

It is an arithmetic number, because the mean of its divisors is an integer number (3151744).

Almost surely, 2^12508357 is an apocalyptic number.

It is an amenable number.

12508357 is a deficient number, since it is larger than the sum of its proper divisors (98619).

12508357 is an equidigital number, since it uses as much as digits as its factorization.

12508357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98618.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 12508357 is about 3536.7155667370. The cubic root of 12508357 is about 232.1311498362.

Adding to 12508357 its reverse (75380521), we get a palindrome (87888878).

It can be divided in two parts, 12 and 508357, that added together give a square (508369 = 713²).

The spelling of 12508357 in words is "twelve million, five hundred eight thousand, three hundred fifty-seven".