1315551525522 has 64 divisors (see below), whose sum is σ = 2963162684160. Its totient is φ = 386338258944.

The previous prime is 1315551525469. The next prime is 1315551525551. The reversal of 1315551525522 is 2255251555131.

It is a super-2 number, since 2×1315551525522² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17554 + ... + 1622162.

It is an arithmetic number, because the mean of its divisors is an integer number (46299416940).

Almost surely, 2^{1315551525522} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315551525522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481581342080).

1315551525522 is an abundant number, since it is smaller than the sum of its proper divisors (1647611158638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315551525522 is a wasteful number, since it uses less digits than its factorization.

1315551525522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605107.

The product of its digits is 375000, while the sum is 42.

The spelling of 1315551525522 in words is "one trillion, three hundred fifteen billion, five hundred fifty-one million, five hundred twenty-five thousand, five hundred twenty-two".