425399977 has 2 divisors, whose sum is σ = 425399978. Its totient is φ = 425399976.

The previous prime is 425399957. The next prime is 425400013. The reversal of 425399977 is 779993524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421850521 + 3549456 = 20539^2 + 1884^2 .

It is a cyclic number.

It is not a de Polignac number, because 425399977 - 2¹⁵ = 425367209 is a prime.

It is not a weakly prime, because it can be changed into another prime (425399957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212699988 + 212699989.

It is an arithmetic number, because the mean of its divisors is an integer number (212699989).

Almost surely, 2^425399977 is an apocalyptic number.

It is an amenable number.

425399977 is a deficient number, since it is larger than the sum of its proper divisors (1).

425399977 is an equidigital number, since it uses as much as digits as its factorization.

425399977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4286520, while the sum is 55.

The square root of 425399977 is about 20625.2267139055. The cubic root of 425399977 is about 752.0830842495.

The spelling of 425399977 in words is "four hundred twenty-five million, three hundred ninety-nine thousand, nine hundred seventy-seven".