1990924280425 has 12 divisors (see below), whose sum is σ = 2468961193756. Its totient is φ = 1592600659200.

The previous prime is 1990924280419. The next prime is 1990924280437. The reversal of 1990924280425 is 5240824290991.

It can be written as a sum of positive squares in 6 ways, for example, as 80259456601 + 1910664823824 = 283301^2 + 1382268^2 .

It is not a de Polignac number, because 1990924280425 - 2⁵ = 1990924280393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3175956 + ... + 3750805.

Almost surely, 2^{1990924280425} is an apocalyptic number.

It is an amenable number.

1990924280425 is a deficient number, since it is larger than the sum of its proper divisors (478036913331).

1990924280425 is a wasteful number, since it uses less digits than its factorization.

1990924280425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6938268 (or 6938263 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 1990924280425 in words is "one trillion, nine hundred ninety billion, nine hundred twenty-four million, two hundred eighty thousand, four hundred twenty-five".