25956842 has 16 divisors (see below), whose sum is σ = 39888072. Its totient is φ = 12664320.

The previous prime is 25956817. The next prime is 25956851. The reversal of 25956842 is 24865952.

It can be written as a sum of positive squares in 4 ways, for example, as 10504081 + 15452761 = 3241^2 + 3931^2 .

It is a super-2 number, since 2×25956842² = 1347515293225928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25956842.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15938 + ... + 17490.

Almost surely, 2^25956842 is an apocalyptic number.

25956842 is a deficient number, since it is larger than the sum of its proper divisors (13931230).

25956842 is a wasteful number, since it uses less digits than its factorization.

25956842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753.

The product of its digits is 172800, while the sum is 41.

The square root of 25956842 is about 5094.7857658591. The cubic root of 25956842 is about 296.0855988741.

The spelling of 25956842 in words is "twenty-five million, nine hundred fifty-six thousand, eight hundred forty-two".