525434409 has 6 divisors (see below), whose sum is σ = 758960826. Its totient is φ = 350289600.

The previous prime is 525434387. The next prime is 525434411. The reversal of 525434409 is 904434525.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 377447184 + 147987225 = 19428^2 + 12165^2 .

It is not a de Polignac number, because 525434409 - 2⁷ = 525434281 is a prime.

It is a super-2 number, since 2×525434409² = 552162636322358562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (525434449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29190792 + ... + 29190809.

It is an arithmetic number, because the mean of its divisors is an integer number (126493471).

Almost surely, 2^525434409 is an apocalyptic number.

It is an amenable number.

525434409 is a deficient number, since it is larger than the sum of its proper divisors (233526417).

525434409 is a wasteful number, since it uses less digits than its factorization.

525434409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58381607 (or 58381604 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 525434409 is about 22922.3560961782. The cubic root of 525434409 is about 806.9367657735.

The spelling of 525434409 in words is "five hundred twenty-five million, four hundred thirty-four thousand, four hundred nine".