7261225166 has 16 divisors (see below), whose sum is σ = 12239658144. Its totient is φ = 3205624224.

The previous prime is 7261225163. The next prime is 7261225171. The reversal of 7261225166 is 6615221627.

It is a super-2 number, since 2×7261225166² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7261225163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6070661 + ... + 6071856.

It is an arithmetic number, because the mean of its divisors is an integer number (764978634).

Almost surely, 2^7261225166 is an apocalyptic number.

7261225166 is a deficient number, since it is larger than the sum of its proper divisors (4978432978).

7261225166 is a wasteful number, since it uses less digits than its factorization.

7261225166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12142555.

The product of its digits is 60480, while the sum is 38.

The square root of 7261225166 is about 85212.8227792038. The cubic root of 7261225166 is about 1936.4366841521.

The spelling of 7261225166 in words is "seven billion, two hundred sixty-one million, two hundred twenty-five thousand, one hundred sixty-six".