25521441140 has 48 divisors (see below), whose sum is σ = 57746304000. Its totient is φ = 9418634880.

The previous prime is 25521441133. The next prime is 25521441149. The reversal of 25521441140 is 4114412552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25521441149) by changing a digit.

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, 525611 + ... + 572109.

It is an arithmetic number, because the mean of its divisors is an integer number (1203048000).

Almost surely, 2^25521441140 is an apocalyptic number.

25521441140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25521441140 is an abundant number, since it is smaller than the sum of its proper divisors (32224862860).

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

25521441140 is a wasteful number, since it uses less digits than its factorization.

25521441140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48632 (or 48630 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 25521441140 its reverse (4114412552), we get a palindrome (29635853692).

The spelling of 25521441140 in words is "twenty-five billion, five hundred twenty-one million, four hundred forty-one thousand, one hundred forty".