1000025443 has 2 divisors, whose sum is σ = 1000025444. Its totient is φ = 1000025442.

The previous prime is 1000025413. The next prime is 1000025483. The reversal of 1000025443 is 3445200001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000025443 - 2²¹ = 997928291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000025443.

It is not a weakly prime, because it can be changed into another prime (1000025413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500012721 + 500012722.

It is an arithmetic number, because the mean of its divisors is an integer number (500012722).

Almost surely, 2^1000025443 is an apocalyptic number.

1000025443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000025443 is an equidigital number, since it uses as much as digits as its factorization.

1000025443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1000025443 is about 31623.1788882775. The cubic root of 1000025443 is about 1000.0084809281.

Adding to 1000025443 its reverse (3445200001), we get a palindrome (4445225444).

The spelling of 1000025443 in words is "one billion, twenty-five thousand, four hundred forty-three".