1525540012 has 24 divisors (see below), whose sum is σ = 2781651600. Its totient is φ = 731161536.

The previous prime is 1525539997. The next prime is 1525540019. The reversal of 1525540012 is 2100455251.

It is not an unprimeable number, because it can be changed into a prime (1525540019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31183 + ... + 63430.

It is an arithmetic number, because the mean of its divisors is an integer number (115902150).

Almost surely, 2^1525540012 is an apocalyptic number.

It is an amenable number.

1525540012 is a deficient number, since it is larger than the sum of its proper divisors (1256111588).

1525540012 is a wasteful number, since it uses less digits than its factorization.

1525540012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94785 (or 94783 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1525540012 is about 39058.1619127168. The cubic root of 1525540012 is about 1151.1746062797.

Adding to 1525540012 its reverse (2100455251), we get a palindrome (3625995263).

The spelling of 1525540012 in words is "one billion, five hundred twenty-five million, five hundred forty thousand, twelve".