2422825781 has 2 divisors, whose sum is σ = 2422825782. Its totient is φ = 2422825780.

The previous prime is 2422825763. The next prime is 2422825807. The reversal of 2422825781 is 1875282242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2329606756 + 93219025 = 48266^2 + 9655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2422825781 is a prime.

It is a super-2 number, since 2×2422825781² = 11740169530156519922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2422825711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211412890 + 1211412891.

It is an arithmetic number, because the mean of its divisors is an integer number (1211412891).

Almost surely, 2^2422825781 is an apocalyptic number.

It is an amenable number.

2422825781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2422825781 is an equidigital number, since it uses as much as digits as its factorization.

2422825781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 143360, while the sum is 41.

The square root of 2422825781 is about 49222.2082093032. The cubic root of 2422825781 is about 1343.0970506735.

The spelling of 2422825781 in words is "two billion, four hundred twenty-two million, eight hundred twenty-five thousand, seven hundred eighty-one".