1520525223 has 96 divisors (see below), whose sum is σ = 2707326720. Its totient is φ = 840611520.

The previous prime is 1520525213. The next prime is 1520525233. The reversal of 1520525223 is 3225250251.

It is an interprime number because it is at equal distance from previous prime (1520525213) and next prime (1520525233).

It is not a de Polignac number, because 1520525223 - 2⁴ = 1520525207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520525213) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6698236 + ... + 6698462.

It is an arithmetic number, because the mean of its divisors is an integer number (28201320).

Almost surely, 2^1520525223 is an apocalyptic number.

1520525223 is a deficient number, since it is larger than the sum of its proper divisors (1186801497).

1520525223 is a wasteful number, since it uses less digits than its factorization.

1520525223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1520525223 is about 38993.9126403084. The cubic root of 1520525223 is about 1149.9118326861.

Adding to 1520525223 its reverse (3225250251), we get a palindrome (4745775474).

The spelling of 1520525223 in words is "one billion, five hundred twenty million, five hundred twenty-five thousand, two hundred twenty-three".