1405994103025 has 6 divisors (see below), whose sum is σ = 1743432687782. Its totient is φ = 1124795282400.

The previous prime is 1405994103013. The next prime is 1405994103049. The reversal of 1405994103025 is 5203014995041.

It can be written as a sum of positive squares in 3 ways, for example, as 189047561616 + 1216946541409 = 434796^2 + 1103153^2 .

It is not a de Polignac number, because 1405994103025 - 2⁷ = 1405994102897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 28119882036 + ... + 28119882085.

Almost surely, 2^{1405994103025} is an apocalyptic number.

It is an amenable number.

1405994103025 is a deficient number, since it is larger than the sum of its proper divisors (337438584757).

1405994103025 is an equidigital number, since it uses as much as digits as its factorization.

1405994103025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56239764131 (or 56239764126 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 1405994103025 in words is "one trillion, four hundred five billion, nine hundred ninety-four million, one hundred three thousand, twenty-five".