25791851 has 8 divisors (see below), whose sum is σ = 26278464. Its totient is φ = 25308360.

The previous prime is 25791811. The next prime is 25791853. The reversal of 25791851 is 15819752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25791851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25791853) 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 7 ways as a sum of consecutive naturals, for example, 21596 + ... + 22758.

It is an arithmetic number, because the mean of its divisors is an integer number (3284808).

Almost surely, 2^25791851 is an apocalyptic number.

25791851 is a deficient number, since it is larger than the sum of its proper divisors (486613).

25791851 is a wasteful number, since it uses less digits than its factorization.

25791851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its digits is 25200, while the sum is 38.

The square root of 25791851 is about 5078.5678099244. The cubic root of 25791851 is about 295.4569228598.

The spelling of 25791851 in words is "twenty-five million, seven hundred ninety-one thousand, eight hundred fifty-one".