25263861 has 12 divisors (see below), whose sum is σ = 39184992. Its totient is φ = 14436408.

The previous prime is 25263851. The next prime is 25263899. The reversal of 25263861 is 16836252.

It is not a de Polignac number, because 25263861 - 2²¹ = 23166709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25263841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85785 + ... + 86078.

It is an arithmetic number, because the mean of its divisors is an integer number (3265416).

Almost surely, 2^25263861 is an apocalyptic number.

25263861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25263861 is a deficient number, since it is larger than the sum of its proper divisors (13921131).

25263861 is a wasteful number, since it uses less digits than its factorization.

25263861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171880 (or 171873 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 25263861 is about 5026.3168423807. The cubic root of 25263861 is about 293.4268880594.

The spelling of 25263861 in words is "twenty-five million, two hundred sixty-three thousand, eight hundred sixty-one".