252777780505 has 16 divisors (see below), whose sum is σ = 316243984320. Its totient is φ = 193792592448.

The previous prime is 252777780491. The next prime is 252777780523. The reversal of 252777780505 is 505087777252.

It is a cyclic number.

It is not a de Polignac number, because 252777780505 - 2⁹ = 252777779993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11080215 + ... + 11103004.

It is an arithmetic number, because the mean of its divisors is an integer number (19765249020).

Almost surely, 2^252777780505 is an apocalyptic number.

It is an amenable number.

252777780505 is a deficient number, since it is larger than the sum of its proper divisors (63466203815).

252777780505 is a wasteful number, since it uses less digits than its factorization.

252777780505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22183320.

The product of its (nonzero) digits is 9604000, while the sum is 55.

The spelling of 252777780505 in words is "two hundred fifty-two billion, seven hundred seventy-seven million, seven hundred eighty thousand, five hundred five".