628425923 has 2 divisors, whose sum is σ = 628425924. Its totient is φ = 628425922.

The previous prime is 628425869. The next prime is 628425943. The reversal of 628425923 is 329524826.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628425923 - 2¹⁶ = 628360387 is a prime.

It is not a weakly prime, because it can be changed into another prime (628425943) 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, 314212961 + 314212962.

It is an arithmetic number, because the mean of its divisors is an integer number (314212962).

Almost surely, 2^628425923 is an apocalyptic number.

628425923 is a deficient number, since it is larger than the sum of its proper divisors (1).

628425923 is an equidigital number, since it uses as much as digits as its factorization.

628425923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The square root of 628425923 is about 25068.4248208778. The cubic root of 628425923 is about 856.5473265267.

The spelling of 628425923 in words is "six hundred twenty-eight million, four hundred twenty-five thousand, nine hundred twenty-three".