2500378901257 has 2 divisors, whose sum is σ = 2500378901258. Its totient is φ = 2500378901256.

The previous prime is 2500378901201. The next prime is 2500378901299. The reversal of 2500378901257 is 7521098730052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1616282511561 + 884096389696 = 1271331^2 + 940264^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500378901257 - 2²³ = 2500370512649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2500378901257.

It is not a weakly prime, because it can be changed into another prime (2500378905257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250189450628 + 1250189450629.

It is an arithmetic number, because the mean of its divisors is an integer number (1250189450629).

Almost surely, 2^{2500378901257} is an apocalyptic number.

It is an amenable number.

2500378901257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500378901257 is an equidigital number, since it uses as much as digits as its factorization.

2500378901257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 2500378901257 in words is "two trillion, five hundred billion, three hundred seventy-eight million, nine hundred one thousand, two hundred fifty-seven".