25431036 has 48 divisors (see below), whose sum is σ = 61824000. Its totient is φ = 8127360.

The previous prime is 25431013. The next prime is 25431053. The reversal of 25431036 is 63013452.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25430997 and 25431015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50715 + ... + 51213.

It is an arithmetic number, because the mean of its divisors is an integer number (1288000).

Almost surely, 2^25431036 is an apocalyptic number.

It is an amenable number.

25431036 is an abundant number, since it is smaller than the sum of its proper divisors (36392964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25431036 is a wasteful number, since it uses less digits than its factorization.

25431036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 25431036 is about 5042.9193925741. The cubic root of 25431036 is about 294.0726832190.

Adding to 25431036 its reverse (63013452), we get a palindrome (88444488).

The spelling of 25431036 in words is "twenty-five million, four hundred thirty-one thousand, thirty-six".