525258428 has 6 divisors (see below), whose sum is σ = 919202256. Its totient is φ = 262629212.

The previous prime is 525258403. The next prime is 525258431. The reversal of 525258428 is 824852525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65657300 + ... + 65657307.

It is an arithmetic number, because the mean of its divisors is an integer number (153200376).

Almost surely, 2^525258428 is an apocalyptic number.

It is an amenable number.

525258428 is a deficient number, since it is larger than the sum of its proper divisors (393943828).

525258428 is a wasteful number, since it uses less digits than its factorization.

525258428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131314611 (or 131314609 counting only the distinct ones).

The product of its digits is 256000, while the sum is 41.

The square root of 525258428 is about 22918.5171422586. The cubic root of 525258428 is about 806.8466680098.

The spelling of 525258428 in words is "five hundred twenty-five million, two hundred fifty-eight thousand, four hundred twenty-eight".