20315625166 has 8 divisors (see below), whose sum is σ = 30474271944. Its totient is φ = 10157534520.

The previous prime is 20315625119. The next prime is 20315625167. The reversal of 20315625166 is 66152651302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315625167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30880 + ... + 203923.

It is an arithmetic number, because the mean of its divisors is an integer number (3809283993).

Almost surely, 2^20315625166 is an apocalyptic number.

20315625166 is a deficient number, since it is larger than the sum of its proper divisors (10158646778).

20315625166 is a wasteful number, since it uses less digits than its factorization.

20315625166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278066.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 20315625166 in words is "twenty billion, three hundred fifteen million, six hundred twenty-five thousand, one hundred sixty-six".