2111257815425 has 24 divisors (see below), whose sum is σ = 2856028012032. Its totient is φ = 1535421528000.

The previous prime is 2111257815377. The next prime is 2111257815439. The reversal of 2111257815425 is 5245187521112.

It is not a de Polignac number, because 2111257815425 - 2²⁰ = 2111256766849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15253280 + ... + 15391070.

It is an arithmetic number, because the mean of its divisors is an integer number (119001167168).

Almost surely, 2^{2111257815425} is an apocalyptic number.

2111257815425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2111257815425 is a deficient number, since it is larger than the sum of its proper divisors (744770196607).

2111257815425 is a wasteful number, since it uses less digits than its factorization.

2111257815425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193529 (or 193524 counting only the distinct ones).

The product of its digits is 224000, while the sum is 44.

The spelling of 2111257815425 in words is "two trillion, one hundred eleven billion, two hundred fifty-seven million, eight hundred fifteen thousand, four hundred twenty-five".