402443025 has 24 divisors (see below), whose sum is σ = 667231104. Its totient is φ = 214036800.

The previous prime is 402443017. The next prime is 402443033. The reversal of 402443025 is 520344204.

It is an interprime number because it is at equal distance from previous prime (402443017) and next prime (402443033).

It is not a de Polignac number, because 402443025 - 2³ = 402443017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402442986 and 402443004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20215 + ... + 34835.

It is an arithmetic number, because the mean of its divisors is an integer number (27801296).

Almost surely, 2^402443025 is an apocalyptic number.

It is an amenable number.

402443025 is a deficient number, since it is larger than the sum of its proper divisors (264788079).

402443025 is a wasteful number, since it uses less digits than its factorization.

402443025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15001 (or 14996 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 402443025 is about 20060.9826529011. The cubic root of 402443025 is about 738.3032863807.

Adding to 402443025 its reverse (520344204), we get a palindrome (922787229).

The spelling of 402443025 in words is "four hundred two million, four hundred forty-three thousand, twenty-five".