201605725 has 12 divisors (see below), whose sum is σ = 251903520. Its totient is φ = 160050800.

The previous prime is 201605689. The next prime is 201605749. The reversal of 201605725 is 527506102.

It is not a de Polignac number, because 201605725 - 2⁷ = 201605597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201605693 and 201605702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27505 + ... + 34054.

It is an arithmetic number, because the mean of its divisors is an integer number (20991960).

Almost surely, 2^201605725 is an apocalyptic number.

201605725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201605725 is a deficient number, since it is larger than the sum of its proper divisors (50297795).

201605725 is a wasteful number, since it uses less digits than its factorization.

201605725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61700 (or 61695 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 201605725 is about 14198.7930825123. The cubic root of 201605725 is about 586.3644339363.

The spelling of 201605725 in words is "two hundred one million, six hundred five thousand, seven hundred twenty-five".