7212565226 has 16 divisors (see below), whose sum is σ = 10960131840. Its totient is φ = 3559224240.

The previous prime is 7212565223. The next prime is 7212565253. The reversal of 7212565226 is 6225652127.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7212565226.

It is not an unprimeable number, because it can be changed into a prime (7212565223) 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, 472331 + ... + 487361.

It is an arithmetic number, because the mean of its divisors is an integer number (685008240).

Almost surely, 2^7212565226 is an apocalyptic number.

7212565226 is a deficient number, since it is larger than the sum of its proper divisors (3747566614).

7212565226 is a wasteful number, since it uses less digits than its factorization.

7212565226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18149.

The product of its digits is 100800, while the sum is 38.

The square root of 7212565226 is about 84926.8227711363. The cubic root of 7212565226 is about 1932.1014119817.

The spelling of 7212565226 in words is "seven billion, two hundred twelve million, five hundred sixty-five thousand, two hundred twenty-six".