205925382486 has 72 divisors (see below), whose sum is σ = 470596082040. Its totient is φ = 66746594592.

The previous prime is 205925382479. The next prime is 205925382493. The reversal of 205925382486 is 684283529502.

205925382486 is a `hidden beast` number, since 2 + 0 + 5 + 9 + 2 + 538 + 24 + 86 = 666.

It is an interprime number because it is at equal distance from previous prime (205925382479) and next prime (205925382493).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 123381660 + ... + 123383328.

It is an arithmetic number, because the mean of its divisors is an integer number (6536056695).

Almost surely, 2^205925382486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205925382486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235298041020).

205925382486 is an abundant number, since it is smaller than the sum of its proper divisors (264670699554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205925382486 is an frugal number, since it uses more digits than its factorization.

205925382486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423 (or 1711 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

Multiplying 205925382486 by its sum of digits (54), we get a square (11119970654244 = 3334662²).

205925382486 divided by its sum of digits (54) gives a square (3813433009 = 61753²).

The spelling of 205925382486 in words is "two hundred five billion, nine hundred twenty-five million, three hundred eighty-two thousand, four hundred eighty-six".