213241525 has 48 divisors (see below), whose sum is σ = 312729984. Its totient is φ = 141223680.

The previous prime is 213241519. The next prime is 213241531. The reversal of 213241525 is 525142312.

It is an interprime number because it is at equal distance from previous prime (213241519) and next prime (213241531).

It is not a de Polignac number, because 213241525 - 2⁵ = 213241493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 213241525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 769687 + ... + 769963.

It is an arithmetic number, because the mean of its divisors is an integer number (6515208).

Almost surely, 2^213241525 is an apocalyptic number.

213241525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213241525 is a deficient number, since it is larger than the sum of its proper divisors (99488459).

213241525 is a wasteful number, since it uses less digits than its factorization.

213241525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 425 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 213241525 is about 14602.7916851539. The cubic root of 213241525 is about 597.4349059295.

Adding to 213241525 its reverse (525142312), we get a palindrome (738383837).

The spelling of 213241525 in words is "two hundred thirteen million, two hundred forty-one thousand, five hundred twenty-five".