61772225 has 6 divisors (see below), whose sum is σ = 76597590. Its totient is φ = 49417760.

The previous prime is 61772197. The next prime is 61772239. The reversal of 61772225 is 52227716.

61772225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1181569 + 60590656 = 1087^2 + 7784^2 .

It is not a de Polignac number, because 61772225 - 2¹⁰ = 61771201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61772191 and 61772200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1235420 + ... + 1235469.

It is an arithmetic number, because the mean of its divisors is an integer number (12766265).

Almost surely, 2^61772225 is an apocalyptic number.

It is an amenable number.

61772225 is a deficient number, since it is larger than the sum of its proper divisors (14825365).

61772225 is a wasteful number, since it uses less digits than its factorization.

61772225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470899 (or 2470894 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 61772225 is about 7859.5308384152. The cubic root of 61772225 is about 395.3038840837.

The spelling of 61772225 in words is "sixty-one million, seven hundred seventy-two thousand, two hundred twenty-five".