252740854081 has 4 divisors (see below), whose sum is σ = 254291411632. Its totient is φ = 251190296532.

The previous prime is 252740854063. The next prime is 252740854103. The reversal of 252740854081 is 180458047252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 252740854081 - 2²³ = 252732465473 is a prime.

It is a super-2 number, since 2×252740854081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252740854031) 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 3 ways as a sum of consecutive naturals, for example, 775278531 + ... + 775278856.

It is an arithmetic number, because the mean of its divisors is an integer number (63572852908).

Almost surely, 2^252740854081 is an apocalyptic number.

It is an amenable number.

252740854081 is a deficient number, since it is larger than the sum of its proper divisors (1550557551).

252740854081 is a wasteful number, since it uses less digits than its factorization.

252740854081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550557550.

The product of its (nonzero) digits is 716800, while the sum is 46.

The spelling of 252740854081 in words is "two hundred fifty-two billion, seven hundred forty million, eight hundred fifty-four thousand, eighty-one".