7255420 has 24 divisors (see below), whose sum is σ = 15302448. Its totient is φ = 2889600.

The previous prime is 7255403. The next prime is 7255453. The reversal of 7255420 is 245527.

It is a super-2 number, since 2×7255420² = 105282238752800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4975 + ... + 6265.

It is an arithmetic number, because the mean of its divisors is an integer number (637602).

Almost surely, 2^7255420 is an apocalyptic number.

It is an amenable number.

7255420 is an abundant number, since it is smaller than the sum of its proper divisors (8047028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7255420 is a wasteful number, since it uses less digits than its factorization.

7255420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 7255420 is about 2693.5886842649. The cubic root of 7255420 is about 193.5920502507.

The spelling of 7255420 in words is "seven million, two hundred fifty-five thousand, four hundred twenty".