1525138128675 has 144 divisors (see below), whose sum is σ = 3287648465920. Its totient is φ = 660229056000.

The previous prime is 1525138128659. The next prime is 1525138128719. The reversal of 1525138128675 is 5768218315251.

1525138128675 is a `hidden beast` number, since 1 + 5 + 251 + 381 + 2 + 8 + 6 + 7 + 5 = 666.

It is not a de Polignac number, because 1525138128675 - 2⁴ = 1525138128659 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 79920135 + ... + 79939215.

Almost surely, 2^{1525138128675} is an apocalyptic number.

1525138128675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1525138128675 is an abundant number, since it is smaller than the sum of its proper divisors (1762510337245).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1525138128675 is a wasteful number, since it uses less digits than its factorization.

1525138128675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21794 (or 21786 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 54.

The spelling of 1525138128675 in words is "one trillion, five hundred twenty-five billion, one hundred thirty-eight million, one hundred twenty-eight thousand, six hundred seventy-five".