2564245086 has 32 divisors (see below), whose sum is σ = 5525939328. Its totient is φ = 788577120.

The previous prime is 2564245067. The next prime is 2564245109. The reversal of 2564245086 is 6805424652.

It is a happy number.

It is a super-2 number, since 2×2564245086² = 13150705722150294792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158505 + ... + 173931.

It is an arithmetic number, because the mean of its divisors is an integer number (172685604).

Almost surely, 2^2564245086 is an apocalyptic number.

2564245086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2564245086 is an abundant number, since it is smaller than the sum of its proper divisors (2961694242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2564245086 is a wasteful number, since it uses less digits than its factorization.

2564245086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17576.

The product of its (nonzero) digits is 460800, while the sum is 42.

The square root of 2564245086 is about 50638.3756256063. The cubic root of 2564245086 is about 1368.7364850775.

The spelling of 2564245086 in words is "two billion, five hundred sixty-four million, two hundred forty-five thousand, eighty-six".