1017772025 has 6 divisors (see below), whose sum is σ = 1262037342. Its totient is φ = 814217600.

The previous prime is 1017771977. The next prime is 1017772027. The reversal of 1017772025 is 5202777101.

It can be written as a sum of positive squares in 3 ways, for example, as 234947584 + 782824441 = 15328^2 + 27979^2 .

It is not a de Polignac number, because 1017772025 - 2¹² = 1017767929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1017771982 and 1017772000.

It is not an unprimeable number, because it can be changed into a prime (1017772027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20355416 + ... + 20355465.

It is an arithmetic number, because the mean of its divisors is an integer number (210339557).

Almost surely, 2^1017772025 is an apocalyptic number.

It is an amenable number.

1017772025 is a deficient number, since it is larger than the sum of its proper divisors (244265317).

1017772025 is an equidigital number, since it uses as much as digits as its factorization.

1017772025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40710891 (or 40710886 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 1017772025 is about 31902.5394757220. The cubic root of 1017772025 is about 1005.8892569001.

The spelling of 1017772025 in words is "one billion, seventeen million, seven hundred seventy-two thousand, twenty-five".