7425561 has 32 divisors (see below), whose sum is σ = 12257280. Its totient is φ = 3931200.

The previous prime is 7425557. The next prime is 7425571. The reversal of 7425561 is 1655247.

It is not a de Polignac number, because 7425561 - 2² = 7425557 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7425571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7696 + ... + 8606.

It is an arithmetic number, because the mean of its divisors is an integer number (383040).

Almost surely, 2^7425561 is an apocalyptic number.

It is an amenable number.

7425561 is a deficient number, since it is larger than the sum of its proper divisors (4831719).

7425561 is a wasteful number, since it uses less digits than its factorization.

7425561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957.

The product of its digits is 8400, while the sum is 30.

The square root of 7425561 is about 2724.9882568554. The cubic root of 7425561 is about 195.0936302494.

The spelling of 7425561 in words is "seven million, four hundred twenty-five thousand, five hundred sixty-one".