25555123 has 12 divisors (see below), whose sum is σ = 28669032. Its totient is φ = 22590720.

The previous prime is 25555111. The next prime is 25555147. The reversal of 25555123 is 32155552.

It is not a de Polignac number, because 25555123 - 2⁵ = 25555091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25555091 and 25555100.

It is not an unprimeable number, because it can be changed into a prime (25555163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14211 + ... + 15907.

It is an arithmetic number, because the mean of its divisors is an integer number (2389086).

Almost surely, 2^25555123 is an apocalyptic number.

25555123 is a deficient number, since it is larger than the sum of its proper divisors (3113909).

25555123 is a wasteful number, since it uses less digits than its factorization.

25555123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782 (or 1745 counting only the distinct ones).

The product of its digits is 7500, while the sum is 28.

The square root of 25555123 is about 5055.2075130503. The cubic root of 25555123 is about 294.5502022006.

The spelling of 25555123 in words is "twenty-five million, five hundred fifty-five thousand, one hundred twenty-three".