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8791225 = 525932
BaseRepresentation
bin100001100010…
…010010111001
3121112122021221
4201202102321
54222304400
6512232041
7134503252
oct41422271
917478257
108791225
114a64a83
122b3b621
131a8a611
14124bb29
15b89c1a
hex8624b9

8791225 has 9 divisors (see below), whose sum is σ = 10919533. Its totient is φ = 7021120.

The previous prime is 8791219. The next prime is 8791229. The reversal of 8791225 is 5221978.

The square root of 8791225 is 2965.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5929 + 8785296 = 77^2 + 2964^2 .

It is not a de Polignac number, because 8791225 - 215 = 8758457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8791229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14529 + ... + 15121.

Almost surely, 28791225 is an apocalyptic number.

8791225 is the 2965-th square number.

8791225 is the 1483-rd centered octagonal number.

It is an amenable number.

8791225 is a deficient number, since it is larger than the sum of its proper divisors (2128308).

8791225 is an frugal number, since it uses more digits than its factorization.

8791225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 598 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The cubic root of 8791225 is about 206.3873771025.

The spelling of 8791225 in words is "eight million, seven hundred ninety-one thousand, two hundred twenty-five".

Divisors: 1 5 25 593 2965 14825 351649 1758245 8791225