1533142135225 has 12 divisors (see below), whose sum is σ = 1952477228524. Its totient is φ = 1193364688320.

The previous prime is 1533142135219. The next prime is 1533142135229. The reversal of 1533142135225 is 5225312413351.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5228591481 + 1527913543744 = 72309^2 + 1236088^2 .

It is not a de Polignac number, because 1533142135225 - 2²⁵ = 1533108580793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1533142135229) 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, 828724554 + ... + 828726403.

Almost surely, 2^{1533142135225} is an apocalyptic number.

It is an amenable number.

1533142135225 is a deficient number, since it is larger than the sum of its proper divisors (419335093299).

1533142135225 is a wasteful number, since it uses less digits than its factorization.

1533142135225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657451004 (or 1657450999 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

Adding to 1533142135225 its reverse (5225312413351), we get a palindrome (6758454548576).

The spelling of 1533142135225 in words is "one trillion, five hundred thirty-three billion, one hundred forty-two million, one hundred thirty-five thousand, two hundred twenty-five".