1791090425 has 6 divisors (see below), whose sum is σ = 2220952158. Its totient is φ = 1432872320.

The previous prime is 1791090421. The next prime is 1791090451. The reversal of 1791090425 is 5240901971.

It can be written as a sum of positive squares in 3 ways, for example, as 27762361 + 1763328064 = 5269^2 + 41992^2 .

It is not a de Polignac number, because 1791090425 - 2² = 1791090421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1791090421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35821784 + ... + 35821833.

It is an arithmetic number, because the mean of its divisors is an integer number (370158693).

Almost surely, 2^1791090425 is an apocalyptic number.

It is an amenable number.

1791090425 is a deficient number, since it is larger than the sum of its proper divisors (429861733).

1791090425 is an equidigital number, since it uses as much as digits as its factorization.

1791090425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71643627 (or 71643622 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 1791090425 is about 42321.2762685626. The cubic root of 1791090425 is about 1214.4300476153.

The spelling of 1791090425 in words is "one billion, seven hundred ninety-one million, ninety thousand, four hundred twenty-five".