1520625513 has 24 divisors (see below), whose sum is σ = 2235076704. Its totient is φ = 918903040.

The previous prime is 1520625511. The next prime is 1520625517. The reversal of 1520625513 is 3155260251.

It is a happy number.

It is not a de Polignac number, because 1520625513 - 2¹ = 1520625511 is a prime.

It is a super-4 number, since 4×1520625513⁴ (a number of 38 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1520625511) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 122206 + ... + 134072.

It is an arithmetic number, because the mean of its divisors is an integer number (93128196).

Almost surely, 2^1520625513 is an apocalyptic number.

It is an amenable number.

1520625513 is a deficient number, since it is larger than the sum of its proper divisors (714451191).

1520625513 is a wasteful number, since it uses less digits than its factorization.

1520625513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12245 (or 12234 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1520625513 is about 38995.1985890571. The cubic root of 1520625513 is about 1149.9371138895.

Adding to 1520625513 its reverse (3155260251), we get a palindrome (4675885764).

The spelling of 1520625513 in words is "one billion, five hundred twenty million, six hundred twenty-five thousand, five hundred thirteen".