25551540241040 has 80 divisors (see below), whose sum is σ = 64971242735040. Its totient is φ = 9268064847360.

The previous prime is 25551540240973. The next prime is 25551540241043. The reversal of 25551540241040 is 4014204515552.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×25551540241040² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25551540240985 and 25551540241003.

It is not an unprimeable number, because it can be changed into a prime (25551540241043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36219710 + ... + 36918429.

It is an arithmetic number, because the mean of its divisors is an integer number (812140534188).

Almost surely, 2^{25551540241040} is an apocalyptic number.

25551540241040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25551540241040 is an abundant number, since it is smaller than the sum of its proper divisors (39419702494000).

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

25551540241040 is a wasteful number, since it uses less digits than its factorization.

25551540241040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73138560 (or 73138554 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

Adding to 25551540241040 its reverse (4014204515552), we get a palindrome (29565744756592).

The spelling of 25551540241040 in words is "twenty-five trillion, five hundred fifty-one billion, five hundred forty million, two hundred forty-one thousand, forty".