25556555241 has 64 divisors (see below), whose sum is σ = 44000808960. Its totient is φ = 14358072960.

The previous prime is 25556555239. The next prime is 25556555249. The reversal of 25556555241 is 14255565552.

25556555241 is a `hidden beast` number, since 2 + 5 + 5 + 56 + 5 + 552 + 41 = 666.

It is not a de Polignac number, because 25556555241 - 2¹ = 25556555239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25556555249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7811436 + ... + 7814706.

It is an arithmetic number, because the mean of its divisors is an integer number (687512640).

Almost surely, 2^25556555241 is an apocalyptic number.

25556555241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25556555241 is a deficient number, since it is larger than the sum of its proper divisors (18444253719).

25556555241 is a wasteful number, since it uses less digits than its factorization.

25556555241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971 (or 3965 counting only the distinct ones).

The product of its digits is 1500000, while the sum is 45.

The spelling of 25556555241 in words is "twenty-five billion, five hundred fifty-six million, five hundred fifty-five thousand, two hundred forty-one".