625840477 has 2 divisors, whose sum is σ = 625840478. Its totient is φ = 625840476.

The previous prime is 625840469. The next prime is 625840547. The reversal of 625840477 is 774048526.

625840477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602162521 + 23677956 = 24539^2 + 4866^2 .

It is a cyclic number.

It is not a de Polignac number, because 625840477 - 2³ = 625840469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625840417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312920238 + 312920239.

It is an arithmetic number, because the mean of its divisors is an integer number (312920239).

Almost surely, 2^625840477 is an apocalyptic number.

It is an amenable number.

625840477 is a deficient number, since it is larger than the sum of its proper divisors (1).

625840477 is an equidigital number, since it uses as much as digits as its factorization.

625840477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 43.

The square root of 625840477 is about 25016.8038925839. The cubic root of 625840477 is about 855.3710537931.

The spelling of 625840477 in words is "six hundred twenty-five million, eight hundred forty thousand, four hundred seventy-seven".