2805421025 has 24 divisors (see below), whose sum is σ = 3846982944. Its totient is φ = 2012342400.

The previous prime is 2805421013. The next prime is 2805421037. The reversal of 2805421025 is 5201245082.

It is an interprime number because it is at equal distance from previous prime (2805421013) and next prime (2805421037).

It is not a de Polignac number, because 2805421025 - 2⁸ = 2805420769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49799 + ... + 89948.

It is an arithmetic number, because the mean of its divisors is an integer number (160290956).

Almost surely, 2^2805421025 is an apocalyptic number.

2805421025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2805421025 is a deficient number, since it is larger than the sum of its proper divisors (1041561919).

2805421025 is a wasteful number, since it uses less digits than its factorization.

2805421025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139841 (or 139836 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 2805421025 is about 52966.2253233133. The cubic root of 2805421025 is about 1410.3687691279.

The spelling of 2805421025 in words is "two billion, eight hundred five million, four hundred twenty-one thousand, twenty-five".