402825889 has 2 divisors, whose sum is σ = 402825890. Its totient is φ = 402825888.

The previous prime is 402825881. The next prime is 402825923. The reversal of 402825889 is 988528204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392713489 + 10112400 = 19817^2 + 3180^2 .

It is a cyclic number.

It is not a de Polignac number, because 402825889 - 2³ = 402825881 is a prime.

It is not a weakly prime, because it can be changed into another prime (402825881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201412944 + 201412945.

It is an arithmetic number, because the mean of its divisors is an integer number (201412945).

Almost surely, 2^402825889 is an apocalyptic number.

It is an amenable number.

402825889 is a deficient number, since it is larger than the sum of its proper divisors (1).

402825889 is an equidigital number, since it uses as much as digits as its factorization.

402825889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 402825889 is about 20070.5228880565. The cubic root of 402825889 is about 738.5373403461.

The spelling of 402825889 in words is "four hundred two million, eight hundred twenty-five thousand, eight hundred eighty-nine".