2891538025 has 12 divisors (see below), whose sum is σ = 3589595152. Its totient is φ = 2310593040.

The previous prime is 2891538019. The next prime is 2891538073. The reversal of 2891538025 is 5208351982.

It is not a de Polignac number, because 2891538025 - 2⁹ = 2891537513 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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43419 + ... + 87568.

Almost surely, 2^2891538025 is an apocalyptic number.

2891538025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2891538025 is a deficient number, since it is larger than the sum of its proper divisors (698057127).

2891538025 is a wasteful number, since it uses less digits than its factorization.

2891538025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131880 (or 131875 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 2891538025 is about 53773.0232086685. The cubic root of 2891538025 is about 1424.6547681174.

The spelling of 2891538025 in words is "two billion, eight hundred ninety-one million, five hundred thirty-eight thousand, twenty-five".