625865941 has 2 divisors, whose sum is σ = 625865942. Its totient is φ = 625865940.

The previous prime is 625865939. The next prime is 625865971. The reversal of 625865941 is 149568526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 574800625 + 51065316 = 23975^2 + 7146^2 .

It is a cyclic number.

It is not a de Polignac number, because 625865941 - 2¹ = 625865939 is a prime.

It is a super-2 number, since 2×625865941² = 783416352207630962, which contains 22 as substring.

Together with 625865939, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 625865891 and 625865900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625865921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312932970 + 312932971.

It is an arithmetic number, because the mean of its divisors is an integer number (312932971).

Almost surely, 2^625865941 is an apocalyptic number.

It is an amenable number.

625865941 is a deficient number, since it is larger than the sum of its proper divisors (1).

625865941 is an equidigital number, since it uses as much as digits as its factorization.

625865941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 46.

The square root of 625865941 is about 25017.3128253216. The cubic root of 625865941 is about 855.3826546584.

The spelling of 625865941 in words is "six hundred twenty-five million, eight hundred sixty-five thousand, nine hundred forty-one".