3997277225 has 18 divisors (see below), whose sum is σ = 5051998266. Its totient is φ = 3137430400.

The previous prime is 3997277191. The next prime is 3997277239. The reversal of 3997277225 is 5227727993.

It can be written as a sum of positive squares in 9 ways, for example, as 14531344 + 3982745881 = 3812^2 + 63109^2 .

It is not a de Polignac number, because 3997277225 - 2⁶ = 3997277161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41765 + ... + 98685.

Almost surely, 2^3997277225 is an apocalyptic number.

It is an amenable number.

3997277225 is a deficient number, since it is larger than the sum of its proper divisors (1054721041).

3997277225 is an equidigital number, since it uses as much as digits as its factorization.

3997277225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57037 (or 56979 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 53.

The square root of 3997277225 is about 63224.0241126741. The cubic root of 3997277225 is about 1587.0407922220.

The spelling of 3997277225 in words is "three billion, nine hundred ninety-seven million, two hundred seventy-seven thousand, two hundred twenty-five".