7145825 has 12 divisors (see below), whose sum is σ = 8912748. Its totient is φ = 5683200.

The previous prime is 7145821. The next prime is 7145839. The reversal of 7145825 is 5285417.

It can be written as a sum of positive squares in 6 ways, for example, as 678976 + 6466849 = 824^2 + 2543^2 .

It is not a de Polignac number, because 7145825 - 2² = 7145821 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7145791 and 7145800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145821) 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, 4085 + ... + 5565.

It is an arithmetic number, because the mean of its divisors is an integer number (742729).

Almost surely, 2^7145825 is an apocalyptic number.

It is an amenable number.

7145825 is a deficient number, since it is larger than the sum of its proper divisors (1766923).

7145825 is a wasteful number, since it uses less digits than its factorization.

7145825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684 (or 1679 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 7145825 is about 2673.1675966912. The cubic root of 7145825 is about 192.6123479785.

The spelling of 7145825 in words is "seven million, one hundred forty-five thousand, eight hundred twenty-five".