1974166825 has 12 divisors (see below), whose sum is σ = 2450772828. Its totient is φ = 1577523200.

The previous prime is 1974166807. The next prime is 1974166847. The reversal of 1974166825 is 5286614791.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 638118121 + 1336048704 = 25261^2 + 36552^2 .

It is not a de Polignac number, because 1974166825 - 2⁷ = 1974166697 is a prime.

It is a super-3 number, since 3×1974166825³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22792 + ... + 66841.

It is an arithmetic number, because the mean of its divisors is an integer number (204231069).

Almost surely, 2^1974166825 is an apocalyptic number.

It is an amenable number.

1974166825 is a deficient number, since it is larger than the sum of its proper divisors (476606003).

1974166825 is an equidigital number, since it uses as much as digits as its factorization.

1974166825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90524 (or 90519 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 1974166825 is about 44431.5971466253. The cubic root of 1974166825 is about 1254.4728981217.

The spelling of 1974166825 in words is "one billion, nine hundred seventy-four million, one hundred sixty-six thousand, eight hundred twenty-five".