1020434425 has 24 divisors (see below), whose sum is σ = 1338956960. Its totient is φ = 769305600.

The previous prime is 1020434417. The next prime is 1020434449. The reversal of 1020434425 is 5244340201.

It is a happy number.

It is not a de Polignac number, because 1020434425 - 2³ = 1020434417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1020434425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86110 + ... + 97240.

Almost surely, 2^1020434425 is an apocalyptic number.

It is an amenable number.

1020434425 is a deficient number, since it is larger than the sum of its proper divisors (318522535).

1020434425 is a wasteful number, since it uses less digits than its factorization.

1020434425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11353 (or 11348 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1020434425 is about 31944.2393085201. The cubic root of 1020434425 is about 1006.7655984496.

Adding to 1020434425 its reverse (5244340201), we get a palindrome (6264774626).

The spelling of 1020434425 in words is "one billion, twenty million, four hundred thirty-four thousand, four hundred twenty-five".