25555158841 has 4 divisors (see below), whose sum is σ = 25560897012. Its totient is φ = 25549420672.

The previous prime is 25555158799. The next prime is 25555158847. The reversal of 25555158841 is 14885155552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13895694400 + 11659464441 = 117880^2 + 107979^2 .

It is a cyclic number.

It is not a de Polignac number, because 25555158841 - 2²¹ = 25553061689 is a prime.

It is a super-2 number, since 2×25555158841² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25555158847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2862400 + ... + 2871313.

It is an arithmetic number, because the mean of its divisors is an integer number (6390224253).

Almost surely, 2^25555158841 is an apocalyptic number.

It is an amenable number.

25555158841 is a deficient number, since it is larger than the sum of its proper divisors (5738171).

25555158841 is an equidigital number, since it uses as much as digits as its factorization.

25555158841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5738170.

The product of its digits is 1600000, while the sum is 49.

The spelling of 25555158841 in words is "twenty-five billion, five hundred fifty-five million, one hundred fifty-eight thousand, eight hundred forty-one".