7125005 has 8 divisors (see below), whose sum is σ = 8600472. Its totient is φ = 5666368.

The previous prime is 7124993. The next prime is 7125037. The reversal of 7125005 is 5005217.

7125005 is digitally balanced in base 3, 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 4 ways, for example, as 2468041 + 4656964 = 1571^2 + 2158^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7125005 - 2¹⁰ = 7123981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3254 + ... + 4983.

It is an arithmetic number, because the mean of its divisors is an integer number (1075059).

Almost surely, 2^7125005 is an apocalyptic number.

It is an amenable number.

7125005 is a deficient number, since it is larger than the sum of its proper divisors (1475467).

7125005 is a wasteful number, since it uses less digits than its factorization.

7125005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8415.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 7125005 is about 2669.2704995935. The cubic root of 7125005 is about 192.4251015755.

The spelling of 7125005 in words is "seven million, one hundred twenty-five thousand, five".