25041440540 has 48 divisors (see below), whose sum is σ = 53349166080. Its totient is φ = 9871867200.

The previous prime is 25041440539. The next prime is 25041440561. The reversal of 25041440540 is 4504414052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 875465 + ... + 903615.

It is an arithmetic number, because the mean of its divisors is an integer number (1111440960).

Almost surely, 2^25041440540 is an apocalyptic number.

25041440540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25041440540 is an abundant number, since it is smaller than the sum of its proper divisors (28307725540).

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

25041440540 is a wasteful number, since it uses less digits than its factorization.

25041440540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28802 (or 28800 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 25041440540 its reverse (4504414052), we get a palindrome (29545854592).

The spelling of 25041440540 in words is "twenty-five billion, forty-one million, four hundred forty thousand, five hundred forty".