25921036 has 6 divisors (see below), whose sum is σ = 45361820. Its totient is φ = 12960516.

The previous prime is 25920989. The next prime is 25921037. The reversal of 25921036 is 63012952.

It is a junction number, because it is equal to n+sod(n) for n = 25920995 and 25921013.

It is not an unprimeable number, because it can be changed into a prime (25921037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240126 + ... + 3240133.

Almost surely, 2^25921036 is an apocalyptic number.

It is an amenable number.

25921036 is a deficient number, since it is larger than the sum of its proper divisors (19440784).

25921036 is a wasteful number, since it uses less digits than its factorization.

25921036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480263 (or 6480261 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 25921036 is about 5091.2705683356. The cubic root of 25921036 is about 295.9493917617.

Adding to 25921036 its reverse (63012952), we get a palindrome (88933988).

The spelling of 25921036 in words is "twenty-five million, nine hundred twenty-one thousand, thirty-six".