2529994981 has 2 divisors, whose sum is σ = 2529994982. Its totient is φ = 2529994980.

The previous prime is 2529994949. The next prime is 2529994993. The reversal of 2529994981 is 1894999252.

2529994981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1738473025 + 791521956 = 41695^2 + 28134^2 .

It is a cyclic number.

It is not a de Polignac number, because 2529994981 - 2⁵ = 2529994949 is a prime.

It is a super-2 number, since 2×2529994981² = 12801749207770380722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2529994921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264997490 + 1264997491.

It is an arithmetic number, because the mean of its divisors is an integer number (1264997491).

Almost surely, 2^2529994981 is an apocalyptic number.

It is an amenable number.

2529994981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2529994981 is an equidigital number, since it uses as much as digits as its factorization.

2529994981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 58.

The square root of 2529994981 is about 50299.0554682690. The cubic root of 2529994981 is about 1362.6151707599.

The spelling of 2529994981 in words is "two billion, five hundred twenty-nine million, nine hundred ninety-four thousand, nine hundred eighty-one".