1525130065 has 4 divisors (see below), whose sum is σ = 1830156084. Its totient is φ = 1220104048.

The previous prime is 1525130051. The next prime is 1525130099. The reversal of 1525130065 is 5600315251.

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

It can be written as a sum of positive squares in 2 ways, for example, as 766237761 + 758892304 = 27681^2 + 27548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525130065 - 2⁹ = 1525129553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 152513002 + ... + 152513011.

It is an arithmetic number, because the mean of its divisors is an integer number (457539021).

Almost surely, 2^1525130065 is an apocalyptic number.

It is an amenable number.

1525130065 is a deficient number, since it is larger than the sum of its proper divisors (305026019).

1525130065 is an equidigital number, since it uses as much as digits as its factorization.

1525130065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305026018.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1525130065 is about 39052.9136557056. The cubic root of 1525130065 is about 1151.0714815171.

The spelling of 1525130065 in words is "one billion, five hundred twenty-five million, one hundred thirty thousand, sixty-five".