1925718757129 has 2 divisors, whose sum is σ = 1925718757130. Its totient is φ = 1925718757128.

The previous prime is 1925718756979. The next prime is 1925718757153. The reversal of 1925718757129 is 9217578175291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1719468351225 + 206250405904 = 1311285^2 + 454148^2 .

It is a cyclic number.

It is not a de Polignac number, because 1925718757129 - 2²³ = 1925710368521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1925718757159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 962859378564 + 962859378565.

It is an arithmetic number, because the mean of its divisors is an integer number (962859378565).

Almost surely, 2^{1925718757129} is an apocalyptic number.

It is an amenable number.

1925718757129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1925718757129 is an equidigital number, since it uses as much as digits as its factorization.

1925718757129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22226400, while the sum is 64.

The spelling of 1925718757129 in words is "one trillion, nine hundred twenty-five billion, seven hundred eighteen million, seven hundred fifty-seven thousand, one hundred twenty-nine".