7224525 has 96 divisors (see below), whose sum is σ = 16665600. Its totient is φ = 2980800.

The previous prime is 7224521. The next prime is 7224551. The reversal of 7224525 is 5254227.

It is not a de Polignac number, because 7224525 - 2² = 7224521 is a prime.

It is a super-2 number, since 2×7224525² = 104387522951250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

7224525 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7224521) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51906 + ... + 52044.

It is an arithmetic number, because the mean of its divisors is an integer number (173600).

Almost surely, 2^7224525 is an apocalyptic number.

7224525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7224525 is an abundant number, since it is smaller than the sum of its proper divisors (9441075).

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

7224525 is a wasteful number, since it uses less digits than its factorization.

7224525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 165 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 7224525 is about 2687.8476519327. The cubic root of 7224525 is about 193.3168750027.

The spelling of 7224525 in words is "seven million, two hundred twenty-four thousand, five hundred twenty-five".