425432531 has 4 divisors (see below), whose sum is σ = 450457992. Its totient is φ = 400407072.

The previous prime is 425432521. The next prime is 425432533. The reversal of 425432531 is 135234524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425432531 is a prime.

It is a super-2 number, since 2×425432531² = 361985676866131922, 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 = 425432494 and 425432503.

It is not an unprimeable number, because it can be changed into a prime (425432533) 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 3 ways as a sum of consecutive naturals, for example, 12512705 + ... + 12512738.

It is an arithmetic number, because the mean of its divisors is an integer number (112614498).

Almost surely, 2^425432531 is an apocalyptic number.

425432531 is a deficient number, since it is larger than the sum of its proper divisors (25025461).

425432531 is a wasteful number, since it uses less digits than its factorization.

425432531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25025460.

The product of its digits is 14400, while the sum is 29.

The square root of 425432531 is about 20626.0158780119. The cubic root of 425432531 is about 752.1022683034.

The spelling of 425432531 in words is "four hundred twenty-five million, four hundred thirty-two thousand, five hundred thirty-one".