7531425 has 72 divisors (see below), whose sum is σ = 15668640. Its totient is φ = 3417600.

The previous prime is 7531423. The next prime is 7531451. The reversal of 7531425 is 5241357.

It is a happy number.

It is not a de Polignac number, because 7531425 - 2¹ = 7531423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7531423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 41986 + ... + 42164.

It is an arithmetic number, because the mean of its divisors is an integer number (217620).

Almost surely, 2^7531425 is an apocalyptic number.

7531425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7531425 is an abundant number, since it is smaller than the sum of its proper divisors (8137215).

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

7531425 is a wasteful number, since it uses less digits than its factorization.

7531425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 215 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 7531425 is about 2744.3441839536. The cubic root of 7531425 is about 196.0163893695.

The spelling of 7531425 in words is "seven million, five hundred thirty-one thousand, four hundred twenty-five".