1520079425 has 12 divisors (see below), whose sum is σ = 1885532220. Its totient is φ = 1215654720.

The previous prime is 1520079419. The next prime is 1520079433. The reversal of 1520079425 is 5249700251.

It can be written as a sum of positive squares in 6 ways, for example, as 849839104 + 670240321 = 29152^2 + 25889^2 .

It is not a de Polignac number, because 1520079425 - 2²⁴ = 1503302209 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81911 + ... + 98739.

It is an arithmetic number, because the mean of its divisors is an integer number (157127685).

Almost surely, 2^1520079425 is an apocalyptic number.

It is an amenable number.

1520079425 is a deficient number, since it is larger than the sum of its proper divisors (365452795).

1520079425 is a wasteful number, since it uses less digits than its factorization.

1520079425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20452 (or 20447 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1520079425 is about 38988.1959700625. The cubic root of 1520079425 is about 1149.7994420257.

Adding to 1520079425 its reverse (5249700251), we get a palindrome (6769779676).

The spelling of 1520079425 in words is "one billion, five hundred twenty million, seventy-nine thousand, four hundred twenty-five".