7222525 has 12 divisors (see below), whose sum is σ = 8999424. Its totient is φ = 5750000.

The previous prime is 7222517. The next prime is 7222549. The reversal of 7222525 is 5252227.

It is not a de Polignac number, because 7222525 - 2³ = 7222517 is a prime.

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

It is a Duffinian number.

7222525 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7222525.

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, 5700 + ... + 6850.

It is an arithmetic number, because the mean of its divisors is an integer number (749952).

Almost surely, 2^7222525 is an apocalyptic number.

It is an amenable number.

7222525 is a deficient number, since it is larger than the sum of its proper divisors (1776899).

7222525 is a wasteful number, since it uses less digits than its factorization.

7222525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1407 counting only the distinct ones).

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

The square root of 7222525 is about 2687.4755812844. The cubic root of 7222525 is about 193.2990344096.

The spelling of 7222525 in words is "seven million, two hundred twenty-two thousand, five hundred twenty-five".