25553742201240 has 128 divisors (see below), whose sum is σ = 83633562720000. Its totient is φ = 6194614469120.

The previous prime is 25553742201193. The next prime is 25553742201241. The reversal of 25553742201240 is 4210224735552.

It is a junction number, because it is equal to n+sod(n) for n = 25553742201192 and 25553742201201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25553742201241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36279859 + ... + 36977501.

It is an arithmetic number, because the mean of its divisors is an integer number (653387208750).

Almost surely, 2^{25553742201240} is an apocalyptic number.

25553742201240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25553742201240 is an abundant number, since it is smaller than the sum of its proper divisors (58079820518760).

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

25553742201240 is a wasteful number, since it uses less digits than its factorization.

25553742201240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725417 (or 725413 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 42.

Adding to 25553742201240 its reverse (4210224735552), we get a palindrome (29763966936792).

The spelling of 25553742201240 in words is "twenty-five trillion, five hundred fifty-three billion, seven hundred forty-two million, two hundred one thousand, two hundred forty".