25315436 has 12 divisors (see below), whose sum is σ = 44559312. Its totient is φ = 12584208.

The previous prime is 25315421. The next prime is 25315439. The reversal of 25315436 is 63451352.

It is a junction number, because it is equal to n+sod(n) for n = 25315399 and 25315408.

It is not an unprimeable number, because it can be changed into a prime (25315439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17600 + ... + 18983.

It is an arithmetic number, because the mean of its divisors is an integer number (3713276).

Almost surely, 2^25315436 is an apocalyptic number.

It is an amenable number.

25315436 is a deficient number, since it is larger than the sum of its proper divisors (19243876).

25315436 is a wasteful number, since it uses less digits than its factorization.

25315436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36760 (or 36758 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 25315436 is about 5031.4447229399. Note that the first 3 decimals coincide. The cubic root of 25315436 is about 293.6264247983.

Adding to 25315436 its reverse (63451352), we get a palindrome (88766788).

The spelling of 25315436 in words is "twenty-five million, three hundred fifteen thousand, four hundred thirty-six".