1525520636 has 24 divisors (see below), whose sum is σ = 2841370560. Its totient is φ = 714166272.

The previous prime is 1525520627. The next prime is 1525520651. The reversal of 1525520636 is 6360255251.

It is a junction number, because it is equal to n+sod(n) for n = 1525520596 and 1525520605.

It is a congruent number.

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, 44996 + ... + 71243.

It is an arithmetic number, because the mean of its divisors is an integer number (118390440).

Almost surely, 2^1525520636 is an apocalyptic number.

It is an amenable number.

1525520636 is a deficient number, since it is larger than the sum of its proper divisors (1315849924).

1525520636 is a wasteful number, since it uses less digits than its factorization.

1525520636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116453 (or 116451 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 1525520636 is about 39057.9138715831. The cubic root of 1525520636 is about 1151.1697325402.

Adding to 1525520636 its reverse (6360255251), we get a palindrome (7885775887).

The spelling of 1525520636 in words is "one billion, five hundred twenty-five million, five hundred twenty thousand, six hundred thirty-six".