7122725 has 12 divisors (see below), whose sum is σ = 9048900. Its totient is φ = 5558400.

The previous prime is 7122721. The next prime is 7122733. The reversal of 7122725 is 5272217.

It can be written as a sum of positive squares in 6 ways, for example, as 315844 + 6806881 = 562^2 + 2609^2 .

It is not a de Polignac number, because 7122725 - 2² = 7122721 is a prime.

It is a super-2 number, since 2×7122725² = 101466422851250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7122694 and 7122703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7122721) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2450 + ... + 4499.

It is an arithmetic number, because the mean of its divisors is an integer number (754075).

Almost surely, 2^7122725 is an apocalyptic number.

It is an amenable number.

7122725 is a deficient number, since it is larger than the sum of its proper divisors (1926175).

7122725 is a wasteful number, since it uses less digits than its factorization.

7122725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000 (or 6995 counting only the distinct ones).

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

The square root of 7122725 is about 2668.8433824412. The cubic root of 7122725 is about 192.4045740560.

The spelling of 7122725 in words is "seven million, one hundred twenty-two thousand, seven hundred twenty-five".