25126379166389 has 2 divisors, whose sum is σ = 25126379166390. Its totient is φ = 25126379166388.

The previous prime is 25126379166347. The next prime is 25126379166433. The reversal of 25126379166389 is 98366197362152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19683046887364 + 5443332279025 = 4436558^2 + 2333095^2 .

It is a cyclic number.

It is not a de Polignac number, because 25126379166389 - 2¹⁶ = 25126379100853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25126379466389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12563189583194 + 12563189583195.

It is an arithmetic number, because the mean of its divisors is an integer number (12563189583195).

Almost surely, 2^{25126379166389} is an apocalyptic number.

It is an amenable number.

25126379166389 is a deficient number, since it is larger than the sum of its proper divisors (1).

25126379166389 is an equidigital number, since it uses as much as digits as its factorization.

25126379166389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176359680, while the sum is 68.

The spelling of 25126379166389 in words is "twenty-five trillion, one hundred twenty-six billion, three hundred seventy-nine million, one hundred sixty-six thousand, three hundred eighty-nine".