1025218172299 has 2 divisors, whose sum is σ = 1025218172300. Its totient is φ = 1025218172298.

The previous prime is 1025218172239. The next prime is 1025218172309. The reversal of 1025218172299 is 9922718125201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1025218172299 - 2¹³ = 1025218164107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1025218172239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512609086149 + 512609086150.

It is an arithmetic number, because the mean of its divisors is an integer number (512609086150).

Almost surely, 2^{1025218172299} is an apocalyptic number.

1025218172299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025218172299 is an equidigital number, since it uses as much as digits as its factorization.

1025218172299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 49.

The spelling of 1025218172299 in words is "one trillion, twenty-five billion, two hundred eighteen million, one hundred seventy-two thousand, two hundred ninety-nine".