625316851 has 2 divisors, whose sum is σ = 625316852. Its totient is φ = 625316850.

The previous prime is 625316849. The next prime is 625316863. The reversal of 625316851 is 158613526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625316851 - 2¹ = 625316849 is a prime.

Together with 625316849, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 625316851.

It is not a weakly prime, because it can be changed into another prime (625316891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312658425 + 312658426.

It is an arithmetic number, because the mean of its divisors is an integer number (312658426).

Almost surely, 2^625316851 is an apocalyptic number.

625316851 is a deficient number, since it is larger than the sum of its proper divisors (1).

625316851 is an equidigital number, since it uses as much as digits as its factorization.

625316851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 625316851 is about 25006.3362170471. The cubic root of 625316851 is about 855.1324309533.

It can be divided in two parts, 6253 and 16851, that added together give a square (23104 = 152²).

The spelling of 625316851 in words is "six hundred twenty-five million, three hundred sixteen thousand, eight hundred fifty-one".