8369505225 has 135 divisors (see below), whose sum is σ = 16516466967. Its totient is φ = 4189281120.

The previous prime is 8369505217. The next prime is 8369505253. The reversal of 8369505225 is 5225059638.

The square root of 8369505225 is 91485.

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

8369505225 is a `hidden beast` number, since 8 + 36 + 95 + 0 + 522 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3013021881 + 5356483344 = 54891^2 + 73188^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 8369505225 - 2³ = 8369505217 is a prime.

It is a super-2 number, since 2×8369505225² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 78219622 + ... + 78219728.

Almost surely, 2^8369505225 is an apocalyptic number.

8369505225 is the 91485-th square number.

8369505225 is the 45743-rd centered octagonal number.

It is an amenable number.

8369505225 is a deficient number, since it is larger than the sum of its proper divisors (8146961742).

8369505225 is a wasteful number, since it uses less digits than its factorization.

8369505225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The cubic root of 8369505225 is about 2030.3298278252.

The spelling of 8369505225 in words is "eight billion, three hundred sixty-nine million, five hundred five thousand, two hundred twenty-five".