252745266981 has 8 divisors (see below), whose sum is σ = 337009744224. Its totient is φ = 168488817200.

The previous prime is 252745266967. The next prime is 252745266989. The reversal of 252745266981 is 189662547252.

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 252745266981 - 2⁹ = 252745266469 is a prime.

It is a super-2 number, since 2×252745266981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252745266989) 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, 1933011 + ... + 2059616.

It is an arithmetic number, because the mean of its divisors is an integer number (42126218028).

Almost surely, 2^252745266981 is an apocalyptic number.

It is an amenable number.

252745266981 is a deficient number, since it is larger than the sum of its proper divisors (84264477243).

252745266981 is a wasteful number, since it uses less digits than its factorization.

252745266981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013731.

The product of its digits is 14515200, while the sum is 57.

The spelling of 252745266981 in words is "two hundred fifty-two billion, seven hundred forty-five million, two hundred sixty-six thousand, nine hundred eighty-one".