402225001 has 2 divisors, whose sum is σ = 402225002. Its totient is φ = 402225000.

The previous prime is 402224957. The next prime is 402225023. The reversal of 402225001 is 100522204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 345960000 + 56265001 = 18600^2 + 7501^2 .

It is a cyclic number.

It is not a de Polignac number, because 402225001 - 2⁷ = 402224873 is a prime.

It is not a weakly prime, because it can be changed into another prime (402225071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201112500 + 201112501.

It is an arithmetic number, because the mean of its divisors is an integer number (201112501).

Almost surely, 2^402225001 is an apocalyptic number.

It is an amenable number.

402225001 is a deficient number, since it is larger than the sum of its proper divisors (1).

402225001 is an equidigital number, since it uses as much as digits as its factorization.

402225001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 402225001 is about 20055.5478858096. The cubic root of 402225001 is about 738.1699367282.

Adding to 402225001 its reverse (100522204), we get a palindrome (502747205).

The spelling of 402225001 in words is "four hundred two million, two hundred twenty-five thousand, one".