425601216265 has 4 divisors (see below), whose sum is σ = 510721459524. Its totient is φ = 340480973008.

The previous prime is 425601216263. The next prime is 425601216281. The reversal of 425601216265 is 562612106524.

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 337406471689 + 88194744576 = 580867^2 + 296976^2 .

It is a cyclic number.

It is not a de Polignac number, because 425601216265 - 2¹ = 425601216263 is a prime.

It is a super-2 number, since 2×425601216265² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425601216263) 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, 42560121622 + ... + 42560121631.

It is an arithmetic number, because the mean of its divisors is an integer number (127680364881).

Almost surely, 2^425601216265 is an apocalyptic number.

It is an amenable number.

425601216265 is a deficient number, since it is larger than the sum of its proper divisors (85120243259).

425601216265 is an equidigital number, since it uses as much as digits as its factorization.

425601216265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85120243258.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 425601216265 in words is "four hundred twenty-five billion, six hundred one million, two hundred sixteen thousand, two hundred sixty-five".