205451925119 has 12 divisors (see below), whose sum is σ = 239142625848. Its totient is φ = 175992944400.

The previous prime is 205451925113. The next prime is 205451925139. The reversal of 205451925119 is 911529154502.

It is not a de Polignac number, because 205451925119 - 2¹⁶ = 205451859583 is a prime.

It is a super-2 number, since 2×205451925119² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205451925119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205451925113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1213877 + ... + 1372734.

It is an arithmetic number, because the mean of its divisors is an integer number (19928552154).

Almost surely, 2^205451925119 is an apocalyptic number.

205451925119 is a deficient number, since it is larger than the sum of its proper divisors (33690700729).

205451925119 is a wasteful number, since it uses less digits than its factorization.

205451925119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588246 (or 2588239 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 44.

The spelling of 205451925119 in words is "two hundred five billion, four hundred fifty-one million, nine hundred twenty-five thousand, one hundred nineteen".