4321525 has 12 divisors (see below), whose sum is σ = 5771332. Its totient is φ = 3191040.

The previous prime is 4321507. The next prime is 4321529. The reversal of 4321525 is 5251234.

It can be written as a sum of positive squares in 6 ways, for example, as 1790244 + 2531281 = 1338^2 + 1591^2 .

It is not a de Polignac number, because 4321525 - 2⁷ = 4321397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4321496 and 4321505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6324 + ... + 6973.

Almost surely, 2^4321525 is an apocalyptic number.

It is an amenable number.

4321525 is a deficient number, since it is larger than the sum of its proper divisors (1449807).

4321525 is a wasteful number, since it uses less digits than its factorization.

4321525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13320 (or 13315 counting only the distinct ones).

The product of its digits is 1200, while the sum is 22.

The square root of 4321525 is about 2078.8277946958. The cubic root of 4321525 is about 162.8842190321.

Adding to 4321525 its reverse (5251234), we get a palindrome (9572759).

The spelling of 4321525 in words is "four million, three hundred twenty-one thousand, five hundred twenty-five".