402150225 has 48 divisors (see below), whose sum is σ = 686519552. Its totient is φ = 207567360.

The previous prime is 402150223. The next prime is 402150227. The reversal of 402150225 is 522051204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (402150223) and next prime (402150227).

It is not a de Polignac number, because 402150225 - 2¹ = 402150223 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (402150223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 868344 + ... + 868806.

Almost surely, 2^402150225 is an apocalyptic number.

It is an amenable number.

402150225 is a deficient number, since it is larger than the sum of its proper divisors (284369327).

402150225 is a wasteful number, since it uses less digits than its factorization.

402150225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 402150225 is about 20053.6835768394. The cubic root of 402150225 is about 738.1241905116.

The spelling of 402150225 in words is "four hundred two million, one hundred fifty thousand, two hundred twenty-five".