12057581257 has 2 divisors, whose sum is σ = 12057581258. Its totient is φ = 12057581256.

The previous prime is 12057581219. The next prime is 12057581323. The reversal of 12057581257 is 75218575021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11730839481 + 326741776 = 108309^2 + 18076^2 .

It is a cyclic number.

It is not a de Polignac number, because 12057581257 - 2³¹ = 9910097609 is a prime.

It is not a weakly prime, because it can be changed into another prime (12057581357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6028790628 + 6028790629.

It is an arithmetic number, because the mean of its divisors is an integer number (6028790629).

Almost surely, 2^12057581257 is an apocalyptic number.

It is an amenable number.

12057581257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12057581257 is an equidigital number, since it uses as much as digits as its factorization.

12057581257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196000, while the sum is 43.

The spelling of 12057581257 in words is "twelve billion, fifty-seven million, five hundred eighty-one thousand, two hundred fifty-seven".