1015135125553 has 4 divisors (see below), whose sum is σ = 1016386834288. Its totient is φ = 1013883416820.

The previous prime is 1015135125533. The next prime is 1015135125559. The reversal of 1015135125553 is 3555215315101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1015135125553 - 2¹⁷ = 1015134994481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015135125559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625853151 + ... + 625854772.

It is an arithmetic number, because the mean of its divisors is an integer number (254096708572).

Almost surely, 2^{1015135125553} is an apocalyptic number.

It is an amenable number.

1015135125553 is a deficient number, since it is larger than the sum of its proper divisors (1251708735).

1015135125553 is an equidigital number, since it uses as much as digits as its factorization.

1015135125553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251708734.

The product of its (nonzero) digits is 56250, while the sum is 37.

The spelling of 1015135125553 in words is "one trillion, fifteen billion, one hundred thirty-five million, one hundred twenty-five thousand, five hundred fifty-three".