8255642905 has 8 divisors (see below), whose sum is σ = 9942537672. Its totient is φ = 6580670208.

The previous prime is 8255642903. The next prime is 8255642951. The reversal of 8255642905 is 5092465528.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 159062544 + 8096580361 = 12612^2 + 89981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8255642905 - 2¹ = 8255642903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8255642903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2978992 + ... + 2981761.

It is an arithmetic number, because the mean of its divisors is an integer number (1242817209).

Almost surely, 2^8255642905 is an apocalyptic number.

It is an amenable number.

8255642905 is a deficient number, since it is larger than the sum of its proper divisors (1686894767).

8255642905 is a wasteful number, since it uses less digits than its factorization.

8255642905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5961035.

The product of its (nonzero) digits is 864000, while the sum is 46.

The square root of 8255642905 is about 90860.5684827032. The cubic root of 8255642905 is about 2021.0805989211.

The spelling of 8255642905 in words is "eight billion, two hundred fifty-five million, six hundred forty-two thousand, nine hundred five".