25893861 has 16 divisors (see below), whose sum is σ = 40128000. Its totient is φ = 14545008.

The previous prime is 25893841. The next prime is 25893863. The reversal of 25893861 is 16839852.

It is not a de Polignac number, because 25893861 - 2⁹ = 25893349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25893863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9211 + ... + 11688.

It is an arithmetic number, because the mean of its divisors is an integer number (2508000).

Almost surely, 2^25893861 is an apocalyptic number.

25893861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25893861 is a deficient number, since it is larger than the sum of its proper divisors (14234139).

25893861 is a wasteful number, since it uses less digits than its factorization.

25893861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20968.

The product of its digits is 103680, while the sum is 42.

The square root of 25893861 is about 5088.6010847776. The cubic root of 25893861 is about 295.8459334888.

The spelling of 25893861 in words is "twenty-five million, eight hundred ninety-three thousand, eight hundred sixty-one".