1525531323345 has 8 divisors (see below), whose sum is σ = 2440850117376. Its totient is φ = 813616705776.

The previous prime is 1525531323289. The next prime is 1525531323383. The reversal of 1525531323345 is 5433231355251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1525531323345 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1525531323297 and 1525531323306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50851044097 + ... + 50851044126.

It is an arithmetic number, because the mean of its divisors is an integer number (305106264672).

Almost surely, 2^{1525531323345} is an apocalyptic number.

1525531323345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1525531323345 is a deficient number, since it is larger than the sum of its proper divisors (915318794031).

1525531323345 is a wasteful number, since it uses less digits than its factorization.

1525531323345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101702088231.

The product of its digits is 810000, while the sum is 42.

Adding to 1525531323345 its reverse (5433231355251), we get a palindrome (6958762678596).

The spelling of 1525531323345 in words is "one trillion, five hundred twenty-five billion, five hundred thirty-one million, three hundred twenty-three thousand, three hundred forty-five".