2566625137 has 2 divisors, whose sum is σ = 2566625138. Its totient is φ = 2566625136.

The previous prime is 2566625119. The next prime is 2566625147. The reversal of 2566625137 is 7315266652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2080819456 + 485805681 = 45616^2 + 22041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2566625137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2566625093 and 2566625102.

It is not a weakly prime, because it can be changed into another prime (2566625107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283312568 + 1283312569.

It is an arithmetic number, because the mean of its divisors is an integer number (1283312569).

Almost surely, 2^2566625137 is an apocalyptic number.

It is an amenable number.

2566625137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566625137 is an equidigital number, since it uses as much as digits as its factorization.

2566625137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 43.

The square root of 2566625137 is about 50661.8706425256. The cubic root of 2566625137 is about 1369.1598267321.

The spelling of 2566625137 in words is "two billion, five hundred sixty-six million, six hundred twenty-five thousand, one hundred thirty-seven".