7321025 has 6 divisors (see below), whose sum is σ = 9078102. Its totient is φ = 5856800.

The previous prime is 7321007. The next prime is 7321031. The reversal of 7321025 is 5201237.

It can be written as a sum of positive squares in 3 ways, for example, as 9409 + 7311616 = 97^2 + 2704^2 .

It is not a de Polignac number, because 7321025 - 2⁶ = 7320961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7320988 and 7321006.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146396 + ... + 146445.

It is an arithmetic number, because the mean of its divisors is an integer number (1513017).

Almost surely, 2^7321025 is an apocalyptic number.

It is an amenable number.

7321025 is a deficient number, since it is larger than the sum of its proper divisors (1757077).

7321025 is a wasteful number, since it uses less digits than its factorization.

7321025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292851 (or 292846 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 7321025 is about 2705.7392705137. The cubic root of 7321025 is about 194.1738000371.

The spelling of 7321025 in words is "seven million, three hundred twenty-one thousand, twenty-five".