7225642 has 4 divisors (see below), whose sum is σ = 10838466. Its totient is φ = 3612820.

The previous prime is 7225607. The next prime is 7225651. The reversal of 7225642 is 2465227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6817321 + 408321 = 2611^2 + 639^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7225642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1806409 + ... + 1806412.

Almost surely, 2^7225642 is an apocalyptic number.

7225642 is a deficient number, since it is larger than the sum of its proper divisors (3612824).

7225642 is a wasteful number, since it uses less digits than its factorization.

7225642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612823.

The product of its digits is 6720, while the sum is 28.

The square root of 7225642 is about 2688.0554309761. The cubic root of 7225642 is about 193.3268375410.

The spelling of 7225642 in words is "seven million, two hundred twenty-five thousand, six hundred forty-two".