2581349995 has 8 divisors (see below), whose sum is σ = 3540137184. Its totient is φ = 1770068544.

The previous prime is 2581349987. The next prime is 2581349999. The reversal of 2581349995 is 5999431852.

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 2581349995 - 2³ = 2581349987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2581349999) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36876394 + ... + 36876463.

It is an arithmetic number, because the mean of its divisors is an integer number (442517148).

Almost surely, 2^2581349995 is an apocalyptic number.

2581349995 is a deficient number, since it is larger than the sum of its proper divisors (958787189).

2581349995 is an equidigital number, since it uses as much as digits as its factorization.

2581349995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73752869.

The product of its digits is 3499200, while the sum is 55.

The square root of 2581349995 is about 50806.9876591793. The cubic root of 2581349995 is about 1371.7731485173.

The spelling of 2581349995 in words is "two billion, five hundred eighty-one million, three hundred forty-nine thousand, nine hundred ninety-five".