25894228155 has 16 divisors (see below), whose sum is σ = 41450167584. Its totient is φ = 13803787520.

The previous prime is 25894228153. The next prime is 25894228159. The reversal of 25894228155 is 55182249852.

It is a happy number.

It is not a de Polignac number, because 25894228155 - 2¹ = 25894228153 is a prime.

It is a super-2 number, since 2×25894228155² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25894228098 and 25894228107.

It is not an unprimeable number, because it can be changed into a prime (25894228153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371034 + ... + 435263.

It is an arithmetic number, because the mean of its divisors is an integer number (2590635474).

Almost surely, 2^25894228155 is an apocalyptic number.

25894228155 is a deficient number, since it is larger than the sum of its proper divisors (15555939429).

25894228155 is a wasteful number, since it uses less digits than its factorization.

25894228155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808446.

The product of its digits is 2304000, while the sum is 51.

The spelling of 25894228155 in words is "twenty-five billion, eight hundred ninety-four million, two hundred twenty-eight thousand, one hundred fifty-five".