7921325 has 6 divisors (see below), whose sum is σ = 9822474. Its totient is φ = 6337040.

The previous prime is 7921313. The next prime is 7921351. The reversal of 7921325 is 5231297.

It can be written as a sum of positive squares in 3 ways, for example, as 64516 + 7856809 = 254^2 + 2803^2 .

It is not a de Polignac number, because 7921325 - 2⁶ = 7921261 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 158402 + ... + 158451.

It is an arithmetic number, because the mean of its divisors is an integer number (1637079).

Almost surely, 2^7921325 is an apocalyptic number.

It is an amenable number.

7921325 is a deficient number, since it is larger than the sum of its proper divisors (1901149).

7921325 is a wasteful number, since it uses less digits than its factorization.

7921325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316863 (or 316858 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 7921325 is about 2814.4848551733. The cubic root of 7921325 is about 199.3422139594.

The spelling of 7921325 in words is "seven million, nine hundred twenty-one thousand, three hundred twenty-five".