25505261126140 has 96 divisors (see below), whose sum is σ = 55314669312000. Its totient is φ = 9874171287552.

The previous prime is 25505261126129. The next prime is 25505261126161. The reversal of 25505261126140 is 4162116250552.

It is a super-2 number, since 2×25505261126140² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25505261126093 and 25505261126102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32519121 + ... + 33294199.

It is an arithmetic number, because the mean of its divisors is an integer number (576194472000).

Almost surely, 2^{25505261126140} is an apocalyptic number.

25505261126140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25505261126140 is an abundant number, since it is smaller than the sum of its proper divisors (29809408185860).

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

25505261126140 is a wasteful number, since it uses less digits than its factorization.

25505261126140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775579 (or 775577 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

Adding to 25505261126140 its reverse (4162116250552), we get a palindrome (29667377376692).

The spelling of 25505261126140 in words is "twenty-five trillion, five hundred five billion, two hundred sixty-one million, one hundred twenty-six thousand, one hundred forty".