25855641 has 24 divisors (see below), whose sum is σ = 43132544. Its totient is φ = 14618880.

The previous prime is 25855639. The next prime is 25855649. The reversal of 25855641 is 14655852.

25855641 is a `hidden beast` number, since 2 + 5 + 8 + 5 + 5 + 641 = 666.

It is not a de Polignac number, because 25855641 - 2¹ = 25855639 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25855596 and 25855605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25855649) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3996 + ... + 8226.

Almost surely, 2^25855641 is an apocalyptic number.

25855641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25855641 is a deficient number, since it is larger than the sum of its proper divisors (17276903).

25855641 is a wasteful number, since it uses less digits than its factorization.

25855641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341 (or 4338 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 25855641 is about 5084.8442454022. The cubic root of 25855641 is about 295.7003030966.

The spelling of 25855641 in words is "twenty-five million, eight hundred fifty-five thousand, six hundred forty-one".