1772668325 has 18 divisors (see below), whose sum is σ = 2211456114. Its totient is φ = 1409574880.

The previous prime is 1772668321. The next prime is 1772668361. The reversal of 1772668325 is 5238662771.

It can be written as a sum of positive squares in 3 ways, for example, as 566773249 + 1205895076 = 23807^2 + 34726^2 .

It is not a de Polignac number, because 1772668325 - 2² = 1772668321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1772668325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1772668321) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 799919 + ... + 802131.

It is an arithmetic number, because the mean of its divisors is an integer number (122858673).

Almost surely, 2^1772668325 is an apocalyptic number.

It is an amenable number.

1772668325 is a deficient number, since it is larger than the sum of its proper divisors (438787789).

1772668325 is an equidigital number, since it uses as much as digits as its factorization.

1772668325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581 (or 2397 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 1772668325 is about 42103.0678810939. The cubic root of 1772668325 is about 1210.2520534496.

The spelling of 1772668325 in words is "one billion, seven hundred seventy-two million, six hundred sixty-eight thousand, three hundred twenty-five".