2001625522 has 24 divisors (see below), whose sum is σ = 3253865904. Its totient is φ = 923058864.

The previous prime is 2001625489. The next prime is 2001625553. The reversal of 2001625522 is 2255261002.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 702633 + ... + 705475.

It is an arithmetic number, because the mean of its divisors is an integer number (135577746).

Almost surely, 2^2001625522 is an apocalyptic number.

2001625522 is a deficient number, since it is larger than the sum of its proper divisors (1252240382).

2001625522 is a wasteful number, since it uses less digits than its factorization.

2001625522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954 (or 4941 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2001625522 is about 44739.5297471934. The cubic root of 2001625522 is about 1260.2622956920.

Adding to 2001625522 its reverse (2255261002), we get a palindrome (4256886524).

The spelling of 2001625522 in words is "two billion, one million, six hundred twenty-five thousand, five hundred twenty-two".