7156125 has 24 divisors (see below), whose sum is σ = 12902136. Its totient is φ = 3816000.

The previous prime is 7156111. The next prime is 7156183. The reversal of 7156125 is 5216517.

It can be written as a sum of positive squares in 4 ways, for example, as 820836 + 6335289 = 906^2 + 2517^2 .

It is not a de Polignac number, because 7156125 - 2⁴ = 7156109 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 2056 + ... + 4305.

It is an arithmetic number, because the mean of its divisors is an integer number (537589).

Almost surely, 2^7156125 is an apocalyptic number.

7156125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7156125 is a deficient number, since it is larger than the sum of its proper divisors (5746011).

7156125 is a wasteful number, since it uses less digits than its factorization.

7156125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382 (or 6369 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 7156125 is about 2675.0934563114. The cubic root of 7156125 is about 192.7048474331.

The spelling of 7156125 in words is "seven million, one hundred fifty-six thousand, one hundred twenty-five".