2891092025 has 12 divisors (see below), whose sum is σ = 3585819600. Its totient is φ = 2312315280.

The previous prime is 2891092021. The next prime is 2891092033. The reversal of 2891092025 is 5202901982.

It is not a de Polignac number, because 2891092025 - 2² = 2891092021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2891092025.

It is not an unprimeable number, because it can be changed into a prime (2891092021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115046 + ... + 137904.

It is an arithmetic number, because the mean of its divisors is an integer number (298818300).

Almost surely, 2^2891092025 is an apocalyptic number.

2891092025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2891092025 is a deficient number, since it is larger than the sum of its proper divisors (694727575).

2891092025 is a wasteful number, since it uses less digits than its factorization.

2891092025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27928 (or 27923 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 2891092025 is about 53768.8759878798. The cubic root of 2891092025 is about 1424.5815165937.

It can be divided in two parts, 289 and 1092025, that multiplied together give a square (315595225 = 17765²).

The spelling of 2891092025 in words is "two billion, eight hundred ninety-one million, ninety-two thousand, twenty-five".