7725122 has 12 divisors (see below), whose sum is σ = 11869110. Its totient is φ = 3770928.

The previous prime is 7725073. The next prime is 7725127. The reversal of 7725122 is 2215277.

It can be written as a sum of positive squares in only one way, i.e., 5193841 + 2531281 = 2279^2 + 1591^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7725091 and 7725100.

It is not an unprimeable number, because it can be changed into a prime (7725127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2654 + ... + 4742.

Almost surely, 2^7725122 is an apocalyptic number.

7725122 is a deficient number, since it is larger than the sum of its proper divisors (4143988).

7725122 is a wasteful number, since it uses less digits than its factorization.

7725122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2134 counting only the distinct ones).

The product of its digits is 1960, while the sum is 26.

The square root of 7725122 is about 2779.4103691251. The cubic root of 7725122 is about 197.6826020436.

The spelling of 7725122 in words is "seven million, seven hundred twenty-five thousand, one hundred twenty-two".