7157825 has 12 divisors (see below), whose sum is σ = 8978220. Its totient is φ = 5660160.

The previous prime is 7157803. The next prime is 7157827. The reversal of 7157825 is 5287517.

It can be written as a sum of positive squares in 6 ways, for example, as 39601 + 7118224 = 199^2 + 2668^2 .

It is not a de Polignac number, because 7157825 - 2¹⁴ = 7141441 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7157827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617 + ... + 3833.

It is an arithmetic number, because the mean of its divisors is an integer number (748185).

Almost surely, 2^7157825 is an apocalyptic number.

It is an amenable number.

7157825 is a deficient number, since it is larger than the sum of its proper divisors (1820395).

7157825 is a wasteful number, since it uses less digits than its factorization.

7157825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316 (or 3311 counting only the distinct ones).

The product of its digits is 19600, while the sum is 35.

The square root of 7157825 is about 2675.4111833511. The cubic root of 7157825 is about 192.7201057981.

The spelling of 7157825 in words is "seven million, one hundred fifty-seven thousand, eight hundred twenty-five".