2522752281 has 48 divisors (see below), whose sum is σ = 4443424128. Its totient is φ = 1346342400.

The previous prime is 2522752249. The next prime is 2522752327. The reversal of 2522752281 is 1822572252.

2522752281 is a `hidden beast` number, since 2 + 52 + 2 + 7 + 522 + 81 = 666.

It is not a de Polignac number, because 2522752281 - 2⁵ = 2522752249 is a prime.

It is a super-2 number, since 2×2522752281² = 12728558142581405922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2522752231) 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, 131311 + ... + 149291.

It is an arithmetic number, because the mean of its divisors is an integer number (92571336).

Almost surely, 2^2522752281 is an apocalyptic number.

2522752281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2522752281 is a deficient number, since it is larger than the sum of its proper divisors (1920671847).

2522752281 is a wasteful number, since it uses less digits than its factorization.

2522752281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18142 (or 18139 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 2522752281 is about 50227.0074860129. The cubic root of 2522752281 is about 1361.3136602264.

The spelling of 2522752281 in words is "two billion, five hundred twenty-two million, seven hundred fifty-two thousand, two hundred eighty-one".