25424286836 has 12 divisors (see below), whose sum is σ = 47915002212. Its totient is φ = 11734286208.

The previous prime is 25424286793. The next prime is 25424286851. The reversal of 25424286836 is 63868242452.

It can be written as a sum of positive squares in 2 ways, for example, as 9306460900 + 16117825936 = 96470^2 + 126956^2 .

It is a super-2 number, since 2×25424286836² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 244464245 + ... + 244464348.

It is an arithmetic number, because the mean of its divisors is an integer number (3992916851).

Almost surely, 2^25424286836 is an apocalyptic number.

25424286836 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25424286836 is a deficient number, since it is larger than the sum of its proper divisors (22490715376).

25424286836 is a wasteful number, since it uses less digits than its factorization.

25424286836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488928610 (or 488928608 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 50.

The spelling of 25424286836 in words is "twenty-five billion, four hundred twenty-four million, two hundred eighty-six thousand, eight hundred thirty-six".