2085837925521 has 48 divisors (see below), whose sum is σ = 3342644765568. Its totient is φ = 1152947577600.

The previous prime is 2085837925517. The next prime is 2085837925559. The reversal of 2085837925521 is 1255297385802.

It is not a de Polignac number, because 2085837925521 - 2² = 2085837925517 is a prime.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2085837925021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1332220 + ... + 2438541.

It is an arithmetic number, because the mean of its divisors is an integer number (69638432616).

Almost surely, 2^{2085837925521} is an apocalyptic number.

2085837925521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2085837925521 is a deficient number, since it is larger than the sum of its proper divisors (1256806840047).

2085837925521 is a wasteful number, since it uses less digits than its factorization.

2085837925521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770902 (or 3770895 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 57.

The spelling of 2085837925521 in words is "two trillion, eighty-five billion, eight hundred thirty-seven million, nine hundred twenty-five thousand, five hundred twenty-one".