525949 has 2 divisors, whose sum is σ = 525950. Its totient is φ = 525948.

The previous prime is 525947. The next prime is 525953. The reversal of 525949 is 949525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 525625 + 324 = 725^2 + 18^2 .

It is a cyclic number.

It is not a de Polignac number, because 525949 - 2¹ = 525947 is a prime.

Together with 525947, it forms a pair of twin primes.

525949 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262974 + 262975.

It is an arithmetic number, because the mean of its divisors is an integer number (262975).

2⁵²⁵⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

525949 is a deficient number, since it is larger than the sum of its proper divisors (1).

525949 is an equidigital number, since it uses as much as digits as its factorization.

525949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 525949 is about 725.2234138526. The cubic root of 525949 is about 80.7200107817.

The spelling of 525949 in words is "five hundred twenty-five thousand, nine hundred forty-nine".