2616025021 has 2 divisors, whose sum is σ = 2616025022. Its totient is φ = 2616025020.

The previous prime is 2616024977. The next prime is 2616025043. The reversal of 2616025021 is 1205206162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2215584900 + 400440121 = 47070^2 + 20011^2 .

It is a cyclic number.

It is not a de Polignac number, because 2616025021 - 2²⁵ = 2582470589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2616025091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1308012510 + 1308012511.

It is an arithmetic number, because the mean of its divisors is an integer number (1308012511).

Almost surely, 2^2616025021 is an apocalyptic number.

It is an amenable number.

2616025021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2616025021 is an equidigital number, since it uses as much as digits as its factorization.

2616025021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2616025021 is about 51147.0920092238. The cubic root of 2616025021 is about 1377.8881478597. Note that the first 3 decimals are identical.

The spelling of 2616025021 in words is "two billion, six hundred sixteen million, twenty-five thousand, twenty-one".