1665625022 has 4 divisors (see below), whose sum is σ = 2498437536. Its totient is φ = 832812510.

The previous prime is 1665625007. The next prime is 1665625033. The reversal of 1665625022 is 2205265661.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416406254 + ... + 416406257.

It is an arithmetic number, because the mean of its divisors is an integer number (624609384).

Almost surely, 2^1665625022 is an apocalyptic number.

1665625022 is a deficient number, since it is larger than the sum of its proper divisors (832812514).

1665625022 is an equidigital number, since it uses as much as digits as its factorization.

1665625022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832812513.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1665625022 is about 40812.0695628144. The cubic root of 1665625022 is about 1185.3840487586.

The spelling of 1665625022 in words is "one billion, six hundred sixty-five million, six hundred twenty-five thousand, twenty-two".