7211725 has 12 divisors (see below), whose sum is σ = 9091060. Its totient is φ = 5673600.

The previous prime is 7211717. The next prime is 7211741. The reversal of 7211725 is 5271127.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3455881 + 3755844 = 1859^2 + 1938^2 .

It is not a de Polignac number, because 7211725 - 2³ = 7211717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 7211725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 840 + ... + 3889.

Almost surely, 2^7211725 is an apocalyptic number.

It is an amenable number.

7211725 is a deficient number, since it is larger than the sum of its proper divisors (1879335).

7211725 is a wasteful number, since it uses less digits than its factorization.

7211725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800 (or 4795 counting only the distinct ones).

The product of its digits is 980, while the sum is 25.

The square root of 7211725 is about 2685.4655089947. The cubic root of 7211725 is about 193.2026382510.

The spelling of 7211725 in words is "seven million, two hundred eleven thousand, seven hundred twenty-five".