2117542311925 has 12 divisors (see below), whose sum is σ = 2657388041280. Its totient is φ = 1673623801520.

The previous prime is 2117542311823. The next prime is 2117542311947. The reversal of 2117542311925 is 5291132457112.

It is not a de Polignac number, because 2117542311925 - 2¹¹ = 2117542309877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 510249085 + ... + 510253234.

It is an arithmetic number, because the mean of its divisors is an integer number (221449003440).

Almost surely, 2^{2117542311925} is an apocalyptic number.

2117542311925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2117542311925 is a deficient number, since it is larger than the sum of its proper divisors (539845729355).

2117542311925 is a wasteful number, since it uses less digits than its factorization.

2117542311925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020502412 (or 1020502407 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The spelling of 2117542311925 in words is "two trillion, one hundred seventeen billion, five hundred forty-two million, three hundred eleven thousand, nine hundred twenty-five".