625844047 has 2 divisors, whose sum is σ = 625844048. Its totient is φ = 625844046.

The previous prime is 625844039. The next prime is 625844123. The reversal of 625844047 is 740448526.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625844047 - 2³ = 625844039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625844017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312922023 + 312922024.

It is an arithmetic number, because the mean of its divisors is an integer number (312922024).

Almost surely, 2^625844047 is an apocalyptic number.

625844047 is a deficient number, since it is larger than the sum of its proper divisors (1).

625844047 is an equidigital number, since it uses as much as digits as its factorization.

625844047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 625844047 is about 25016.8752445224. The cubic root of 625844047 is about 855.3726802293.

It can be divided in two parts, 6258 and 44047, that added together give a palindrome (50305).

The spelling of 625844047 in words is "six hundred twenty-five million, eight hundred forty-four thousand, forty-seven".