12520757 has 2 divisors, whose sum is σ = 12520758. Its totient is φ = 12520756.

The previous prime is 12520751. The next prime is 12520777. The reversal of 12520757 is 75702521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12103441 + 417316 = 3479^2 + 646^2 .

It is a cyclic number.

It is not a de Polignac number, because 12520757 - 2¹⁰ = 12519733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12520751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260378 + 6260379.

It is an arithmetic number, because the mean of its divisors is an integer number (6260379).

Almost surely, 2^12520757 is an apocalyptic number.

It is an amenable number.

12520757 is a deficient number, since it is larger than the sum of its proper divisors (1).

12520757 is an equidigital number, since it uses as much as digits as its factorization.

12520757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 12520757 is about 3538.4681713985. The cubic root of 12520757 is about 232.2078312532.

The spelling of 12520757 in words is "twelve million, five hundred twenty thousand, seven hundred fifty-seven".