25065440536 has 16 divisors (see below), whose sum is σ = 47164956840. Its totient is φ = 12488118720.

The previous prime is 25065440531. The next prime is 25065440581. The reversal of 25065440536 is 63504456052.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25065440531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5572806 + ... + 5577301.

Almost surely, 2^25065440536 is an apocalyptic number.

It is an amenable number.

25065440536 is a deficient number, since it is larger than the sum of its proper divisors (22099516304).

25065440536 is a wasteful number, since it uses less digits than its factorization.

25065440536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11150394 (or 11150390 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 25065440536 its reverse (63504456052), we get a palindrome (88569896588).

The spelling of 25065440536 in words is "twenty-five billion, sixty-five million, four hundred forty thousand, five hundred thirty-six".