7425391 has 2 divisors, whose sum is σ = 7425392. Its totient is φ = 7425390.

The previous prime is 7425377. The next prime is 7425401. The reversal of 7425391 is 1935247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7425391 - 2¹¹ = 7423343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7425331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3712695 + 3712696.

It is an arithmetic number, because the mean of its divisors is an integer number (3712696).

Almost surely, 2^7425391 is an apocalyptic number.

7425391 is a deficient number, since it is larger than the sum of its proper divisors (1).

7425391 is an equidigital number, since it uses as much as digits as its factorization.

7425391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 7425391 is about 2724.9570638819. The cubic root of 7425391 is about 195.0921414205.

The spelling of 7425391 in words is "seven million, four hundred twenty-five thousand, three hundred ninety-one".