431440525 has 6 divisors (see below), whose sum is σ = 534986282. Its totient is φ = 345152400.

The previous prime is 431440523. The next prime is 431440561. The reversal of 431440525 is 525044134.

It can be written as a sum of positive squares in 3 ways, for example, as 6084 + 431434441 = 78^2 + 20771^2 .

It is not a de Polignac number, because 431440525 - 2¹ = 431440523 is a prime.

It is a super-2 number, since 2×431440525² = 372281853224551250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431440493 and 431440502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431440523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8628786 + ... + 8628835.

Almost surely, 2^431440525 is an apocalyptic number.

It is an amenable number.

431440525 is a deficient number, since it is larger than the sum of its proper divisors (103545757).

431440525 is a wasteful number, since it uses less digits than its factorization.

431440525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17257631 (or 17257626 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 431440525 is about 20771.1464536746. The cubic root of 431440525 is about 755.6261489893.

Adding to 431440525 its reverse (525044134), we get a palindrome (956484659).

The spelling of 431440525 in words is "four hundred thirty-one million, four hundred forty thousand, five hundred twenty-five".