425765785 has 4 divisors (see below), whose sum is σ = 510918948. Its totient is φ = 340612624.

The previous prime is 425765779. The next prime is 425765789. The reversal of 425765785 is 587567524.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 191185929 + 234579856 = 13827^2 + 15316^2 .

It is a cyclic number.

It is not a de Polignac number, because 425765785 - 2³ = 425765777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425765789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42576574 + ... + 42576583.

It is an arithmetic number, because the mean of its divisors is an integer number (127729737).

Almost surely, 2^425765785 is an apocalyptic number.

It is an amenable number.

425765785 is a deficient number, since it is larger than the sum of its proper divisors (85153163).

425765785 is an equidigital number, since it uses as much as digits as its factorization.

425765785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85153162.

The product of its digits is 2352000, while the sum is 49.

The square root of 425765785 is about 20634.0927835464. The cubic root of 425765785 is about 752.2985984338.

The spelling of 425765785 in words is "four hundred twenty-five million, seven hundred sixty-five thousand, seven hundred eighty-five".