1253522515541 has 16 divisors (see below), whose sum is σ = 1365151200000. Its totient is φ = 1146468447936.

The previous prime is 1253522515463. The next prime is 1253522515577. The reversal of 1253522515541 is 1455152253521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253522515541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253522515841) 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, 4944995 + ... + 5192303.

It is an arithmetic number, because the mean of its divisors is an integer number (85321950000).

Almost surely, 2^{1253522515541} is an apocalyptic number.

It is an amenable number.

1253522515541 is a deficient number, since it is larger than the sum of its proper divisors (111628684459).

1253522515541 is a wasteful number, since it uses less digits than its factorization.

1253522515541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256556.

The product of its digits is 300000, while the sum is 41.

The spelling of 1253522515541 in words is "one trillion, two hundred fifty-three billion, five hundred twenty-two million, five hundred fifteen thousand, five hundred forty-one".