7725085 has 4 divisors (see below), whose sum is σ = 9270108. Its totient is φ = 6180064.

The previous prime is 7725073. The next prime is 7725127. The reversal of 7725085 is 5805277.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1359556 + 6365529 = 1166^2 + 2523^2 .

It is a cyclic number.

It is not a de Polignac number, because 7725085 - 2⁷ = 7724957 is a prime.

It is a Duffinian number.

7725085 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7725085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772504 + ... + 772513.

It is an arithmetic number, because the mean of its divisors is an integer number (2317527).

Almost surely, 2^7725085 is an apocalyptic number.

It is an amenable number.

7725085 is a deficient number, since it is larger than the sum of its proper divisors (1545023).

7725085 is a wasteful number, since it uses less digits than its factorization.

7725085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545022.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 7725085 is about 2779.4037130291. The cubic root of 7725085 is about 197.6822864383.

The spelling of 7725085 in words is "seven million, seven hundred twenty-five thousand, eighty-five".