1520330525 has 12 divisors (see below), whose sum is σ = 2154525792. Its totient is φ = 1042512240.

The previous prime is 1520330507. The next prime is 1520330527. The reversal of 1520330525 is 5250330251.

It is not a de Polignac number, because 1520330525 - 2⁸ = 1520330269 is a prime.

It is a super-2 number, since 2×1520330525² = 4622809810493551250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1520330494 and 1520330503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520330527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4343627 + ... + 4343976.

It is an arithmetic number, because the mean of its divisors is an integer number (179543816).

Almost surely, 2^1520330525 is an apocalyptic number.

It is an amenable number.

1520330525 is a deficient number, since it is larger than the sum of its proper divisors (634195267).

1520330525 is an equidigital number, since it uses as much as digits as its factorization.

1520330525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8687620 (or 8687615 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 1520330525 is about 38991.4160425086. The cubic root of 1520330525 is about 1149.8627498457.

Adding to 1520330525 its reverse (5250330251), we get a palindrome (6770660776).

The spelling of 1520330525 in words is "one billion, five hundred twenty million, three hundred thirty thousand, five hundred twenty-five".