42764428825 has 6 divisors (see below), whose sum is σ = 53027891774. Its totient is φ = 34211543040.

The previous prime is 42764428823. The next prime is 42764428841. The reversal of 42764428825 is 52882446724.

It can be written as a sum of positive squares in 3 ways, for example, as 2148878736 + 40615550089 = 46356^2 + 201533^2 .

It is not a de Polignac number, because 42764428825 - 2¹ = 42764428823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42764428823) 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, 855288552 + ... + 855288601.

Almost surely, 2^42764428825 is an apocalyptic number.

It is an amenable number.

42764428825 is a deficient number, since it is larger than the sum of its proper divisors (10263462949).

42764428825 is a wasteful number, since it uses less digits than its factorization.

42764428825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710577163 (or 1710577158 counting only the distinct ones).

The product of its digits is 6881280, while the sum is 52.

The spelling of 42764428825 in words is "forty-two billion, seven hundred sixty-four million, four hundred twenty-eight thousand, eight hundred twenty-five".