1025801104813 has 4 divisors (see below), whose sum is σ = 1025803917180. Its totient is φ = 1025798292448.

The previous prime is 1025801104793. The next prime is 1025801104829. The reversal of 1025801104813 is 3184011085201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 857887193284 + 167913911529 = 926222^2 + 409773^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025801104813 - 2¹⁷ = 1025800973741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025801104873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760120 + ... + 1621537.

It is an arithmetic number, because the mean of its divisors is an integer number (256450979295).

Almost surely, 2^{1025801104813} is an apocalyptic number.

It is an amenable number.

1025801104813 is a deficient number, since it is larger than the sum of its proper divisors (2812367).

1025801104813 is an equidigital number, since it uses as much as digits as its factorization.

1025801104813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812366.

The product of its (nonzero) digits is 7680, while the sum is 34.

The spelling of 1025801104813 in words is "one trillion, twenty-five billion, eight hundred one million, one hundred four thousand, eight hundred thirteen".