25540036 has 6 divisors (see below), whose sum is σ = 44695070. Its totient is φ = 12770016.

The previous prime is 25540033. The next prime is 25540037. The reversal of 25540036 is 63004552.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 3261636 = 4720^2 + 1806^2 .

It is not an unprimeable number, because it can be changed into a prime (25540033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3192501 + ... + 3192508.

Almost surely, 2^25540036 is an apocalyptic number.

It is an amenable number.

25540036 is a deficient number, since it is larger than the sum of its proper divisors (19155034).

25540036 is a wasteful number, since it uses less digits than its factorization.

25540036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385013 (or 6385011 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 25540036 is about 5053.7150691348. The cubic root of 25540036 is about 294.4922261710.

Adding to 25540036 its reverse (63004552), we get a palindrome (88544588).

The spelling of 25540036 in words is "twenty-five million, five hundred forty thousand, thirty-six".