1525323521313 has 12 divisors (see below), whose sum is σ = 2203522292608. Its totient is φ = 1016754406200.

The previous prime is 1525323521311. The next prime is 1525323521339. The reversal of 1525323521313 is 3131253235251.

1525323521313 is a `hidden beast` number, since 1 + 52 + 53 + 2 + 3 + 521 + 31 + 3 = 666.

It is not a de Polignac number, because 1525323521313 - 2¹ = 1525323521311 is a prime.

It is a super-2 number, since 2×1525323521313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1525323521311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10586245 + ... + 10729362.

Almost surely, 2^{1525323521313} is an apocalyptic number.

It is an amenable number.

1525323521313 is a deficient number, since it is larger than the sum of its proper divisors (678198771295).

1525323521313 is a wasteful number, since it uses less digits than its factorization.

1525323521313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21323564 (or 21323561 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

Adding to 1525323521313 its reverse (3131253235251), we get a palindrome (4656576756564).

The spelling of 1525323521313 in words is "one trillion, five hundred twenty-five billion, three hundred twenty-three million, five hundred twenty-one thousand, three hundred thirteen".