525003213 has 32 divisors (see below), whose sum is σ = 817516800. Its totient is φ = 293469696.

The previous prime is 525003209. The next prime is 525003217. The reversal of 525003213 is 312300525.

It is an interprime number because it is at equal distance from previous prime (525003209) and next prime (525003217).

It is not a de Polignac number, because 525003213 - 2² = 525003209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 525003213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525003217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 632883 + ... + 633711.

It is an arithmetic number, because the mean of its divisors is an integer number (25547400).

Almost surely, 2^525003213 is an apocalyptic number.

525003213 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

525003213 is a deficient number, since it is larger than the sum of its proper divisors (292513587).

525003213 is a wasteful number, since it uses less digits than its factorization.

525003213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 525003213 is about 22912.9485880801. The cubic root of 525003213 is about 806.7159687061.

Adding to 525003213 its reverse (312300525), we get a palindrome (837303738).

The spelling of 525003213 in words is "five hundred twenty-five million, three thousand, two hundred thirteen".