525251003 has 4 divisors (see below), whose sum is σ = 525329808. Its totient is φ = 525172200.

The previous prime is 525250993. The next prime is 525251047. The reversal of 525251003 is 300152525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525251003 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 525251003.

It is not an unprimeable number, because it can be changed into a prime (525251303) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 28376 + ... + 43077.

It is an arithmetic number, because the mean of its divisors is an integer number (131332452).

Almost surely, 2^525251003 is an apocalyptic number.

525251003 is a deficient number, since it is larger than the sum of its proper divisors (78805).

525251003 is an equidigital number, since it uses as much as digits as its factorization.

525251003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78804.

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

The square root of 525251003 is about 22918.3551547662. The cubic root of 525251003 is about 806.8428661576.

The spelling of 525251003 in words is "five hundred twenty-five million, two hundred fifty-one thousand, three".