190023125905 has 32 divisors (see below), whose sum is σ = 238878720000. Its totient is φ = 144933297600.

The previous prime is 190023125899. The next prime is 190023125923. The reversal of 190023125905 is 509521320091.

It is not a de Polignac number, because 190023125905 - 2¹⁹ = 190022601617 is a prime.

It is a super-2 number, since 2×190023125905² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16490736 + ... + 16502254.

It is an arithmetic number, because the mean of its divisors is an integer number (7464960000).

Almost surely, 2^190023125905 is an apocalyptic number.

It is an amenable number.

190023125905 is a deficient number, since it is larger than the sum of its proper divisors (48855594095).

190023125905 is a wasteful number, since it uses less digits than its factorization.

190023125905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13125.

The product of its (nonzero) digits is 24300, while the sum is 37.

Adding to 190023125905 its reverse (509521320091), we get a palindrome (699544445996).

The spelling of 190023125905 in words is "one hundred ninety billion, twenty-three million, one hundred twenty-five thousand, nine hundred five".