205013525 has 6 divisors (see below), whose sum is σ = 254216802. Its totient is φ = 164010800.

The previous prime is 205013519. The next prime is 205013539. The reversal of 205013525 is 525310502.

It can be written as a sum of positive squares in 3 ways, for example, as 58094884 + 146918641 = 7622^2 + 12121^2 .

It is not a de Polignac number, because 205013525 - 2²² = 200819221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205013525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4100246 + ... + 4100295.

It is an arithmetic number, because the mean of its divisors is an integer number (42369467).

Almost surely, 2^205013525 is an apocalyptic number.

205013525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205013525 is a deficient number, since it is larger than the sum of its proper divisors (49203277).

205013525 is an equidigital number, since it uses as much as digits as its factorization.

205013525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8200551 (or 8200546 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 205013525 is about 14318.2933689738. The cubic root of 205013525 is about 589.6498209289.

The spelling of 205013525 in words is "two hundred five million, thirteen thousand, five hundred twenty-five".