52225382781 has 48 divisors (see below), whose sum is σ = 89155946880. Its totient is φ = 29041925760.

The previous prime is 52225382771. The next prime is 52225382813. The reversal of 52225382781 is 18728352225.

52225382781 is a `hidden beast` number, since 522 + 2 + 53 + 8 + 2 + 78 + 1 = 666.

It is not a de Polignac number, because 52225382781 - 2⁵ = 52225382749 is a prime.

It is a super-2 number, since 2×52225382781² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52225382771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93435 + ... + 336423.

It is an arithmetic number, because the mean of its divisors is an integer number (1857415560).

Almost surely, 2^52225382781 is an apocalyptic number.

It is an amenable number.

52225382781 is a deficient number, since it is larger than the sum of its proper divisors (36930564099).

52225382781 is a wasteful number, since it uses less digits than its factorization.

52225382781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243186 (or 243183 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The spelling of 52225382781 in words is "fifty-two billion, two hundred twenty-five million, three hundred eighty-two thousand, seven hundred eighty-one".