25786436 has 12 divisors (see below), whose sum is σ = 48597612. Its totient is φ = 11901408.

The previous prime is 25786429. The next prime is 25786459. The reversal of 25786436 is 63468752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7672900 + 18113536 = 2770^2 + 4256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25786393 and 25786402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247895 + ... + 247998.

It is an arithmetic number, because the mean of its divisors is an integer number (4049801).

Almost surely, 2^25786436 is an apocalyptic number.

25786436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25786436 is a deficient number, since it is larger than the sum of its proper divisors (22811176).

25786436 is a wasteful number, since it uses less digits than its factorization.

25786436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495910 (or 495908 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 25786436 is about 5078.0346591964. The cubic root of 25786436 is about 295.4362443489.

The spelling of 25786436 in words is "twenty-five million, seven hundred eighty-six thousand, four hundred thirty-six".