625887499 has 2 divisors, whose sum is σ = 625887500. Its totient is φ = 625887498.

The previous prime is 625887497. The next prime is 625887593. The reversal of 625887499 is 994788526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625887499 - 2¹ = 625887497 is a prime.

It is a super-2 number, since 2×625887499² = 783470322808950002, which contains 22 as substring.

Together with 625887497, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (625887497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312943749 + 312943750.

It is an arithmetic number, because the mean of its divisors is an integer number (312943750).

Almost surely, 2^625887499 is an apocalyptic number.

625887499 is a deficient number, since it is larger than the sum of its proper divisors (1).

625887499 is an equidigital number, since it uses as much as digits as its factorization.

625887499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 58.

The square root of 625887499 is about 25017.7436832341. The cubic root of 625887499 is about 855.3924757858.

The spelling of 625887499 in words is "six hundred twenty-five million, eight hundred eighty-seven thousand, four hundred ninety-nine".