1525320453223 has 4 divisors (see below), whose sum is σ = 1743223375120. Its totient is φ = 1307417531328.

The previous prime is 1525320453221. The next prime is 1525320453227. The reversal of 1525320453223 is 3223540235251.

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

It is a cyclic number.

It is not a de Polignac number, because 1525320453223 - 2¹ = 1525320453221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525320453221) 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, 108951460938 + ... + 108951460951.

It is an arithmetic number, because the mean of its divisors is an integer number (435805843780).

Almost surely, 2^{1525320453223} is an apocalyptic number.

1525320453223 is a deficient number, since it is larger than the sum of its proper divisors (217902921897).

1525320453223 is an equidigital number, since it uses as much as digits as its factorization.

1525320453223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217902921896.

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 1525320453223 its reverse (3223540235251), we get a palindrome (4748860688474).

The spelling of 1525320453223 in words is "one trillion, five hundred twenty-five billion, three hundred twenty million, four hundred fifty-three thousand, two hundred twenty-three".