52780252505 has 16 divisors (see below), whose sum is σ = 64401901200. Its totient is φ = 41519047680.

The previous prime is 52780252463. The next prime is 52780252571. The reversal of 52780252505 is 50525208725.

It can be written as a sum of positive squares in 8 ways, for example, as 14575249984 + 38205002521 = 120728^2 + 195461^2 .

It is not a de Polignac number, because 52780252505 - 2²⁶ = 52713143641 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, 247100 + ... + 408189.

It is an arithmetic number, because the mean of its divisors is an integer number (4025118825).

Almost surely, 2^52780252505 is an apocalyptic number.

It is an amenable number.

52780252505 is a deficient number, since it is larger than the sum of its proper divisors (11621648695).

52780252505 is a wasteful number, since it uses less digits than its factorization.

52780252505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655564.

The product of its (nonzero) digits is 280000, while the sum is 41.

The spelling of 52780252505 in words is "fifty-two billion, seven hundred eighty million, two hundred fifty-two thousand, five hundred five".