1363125521 has 16 divisors (see below), whose sum is σ = 1489010688. Its totient is φ = 1243981200.

The previous prime is 1363125509. The next prime is 1363125539. The reversal of 1363125521 is 1255213631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1363125521 is a prime.

It is a super-2 number, since 2×1363125521² = 3716222372003042882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1363125121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37160 + ... + 64086.

It is an arithmetic number, because the mean of its divisors is an integer number (93063168).

Almost surely, 2^1363125521 is an apocalyptic number.

It is an amenable number.

1363125521 is a deficient number, since it is larger than the sum of its proper divisors (125885167).

1363125521 is a wasteful number, since it uses less digits than its factorization.

1363125521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27052.

The product of its digits is 5400, while the sum is 29.

The square root of 1363125521 is about 36920.5298038910. The cubic root of 1363125521 is about 1108.7797430829.

The spelling of 1363125521 in words is "one billion, three hundred sixty-three million, one hundred twenty-five thousand, five hundred twenty-one".