1525313242 has 16 divisors (see below), whose sum is σ = 2352270312. Its totient is φ = 741358080.

The previous prime is 1525313221. The next prime is 1525313267. The reversal of 1525313242 is 2423135251.

It can be written as a sum of positive squares in 4 ways, for example, as 452030121 + 1073283121 = 21261^2 + 32761^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1525313242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10863 + ... + 56290.

Almost surely, 2^1525313242 is an apocalyptic number.

1525313242 is a deficient number, since it is larger than the sum of its proper divisors (826957070).

1525313242 is a wasteful number, since it uses less digits than its factorization.

1525313242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67473.

The product of its digits is 7200, while the sum is 28.

The square root of 1525313242 is about 39055.2588264372. The cubic root of 1525313242 is about 1151.1175631344.

Adding to 1525313242 its reverse (2423135251), we get a palindrome (3948448493).

The spelling of 1525313242 in words is "one billion, five hundred twenty-five million, three hundred thirteen thousand, two hundred forty-two".