625050281 has 2 divisors, whose sum is σ = 625050282. Its totient is φ = 625050280.

The previous prime is 625050197. The next prime is 625050299. The reversal of 625050281 is 182050526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622752025 + 2298256 = 24955^2 + 1516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625050281 is a prime.

It is a super-2 number, since 2×625050281² = 781375707556357922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_32562821 and since 625050281 and 32562821 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (625055281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312525140 + 312525141.

It is an arithmetic number, because the mean of its divisors is an integer number (312525141).

Almost surely, 2^625050281 is an apocalyptic number.

It is an amenable number.

625050281 is a deficient number, since it is larger than the sum of its proper divisors (1).

625050281 is an equidigital number, since it uses as much as digits as its factorization.

625050281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 625050281 is about 25001.0055997754. The cubic root of 625050281 is about 855.0109005370.

The spelling of 625050281 in words is "six hundred twenty-five million, fifty thousand, two hundred eighty-one".