25850123 has 4 divisors (see below), whose sum is σ = 27838608. Its totient is φ = 23861640.

The previous prime is 25850117. The next prime is 25850129. The reversal of 25850123 is 32105852.

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

It is an interprime number because it is at equal distance from previous prime (25850117) and next prime (25850129).

It is a cyclic number.

It is not a de Polignac number, because 25850123 - 2¹⁰ = 25849099 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25850092 and 25850101.

It is not an unprimeable number, because it can be changed into a prime (25850129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994223 + ... + 994248.

It is an arithmetic number, because the mean of its divisors is an integer number (6959652).

Almost surely, 2^25850123 is an apocalyptic number.

25850123 is a deficient number, since it is larger than the sum of its proper divisors (1988485).

25850123 is a wasteful number, since it uses less digits than its factorization.

25850123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988484.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 25850123 is about 5084.3016236254. The cubic root of 25850123 is about 295.6792659032.

Adding to 25850123 its reverse (32105852), we get a palindrome (57955975).

The spelling of 25850123 in words is "twenty-five million, eight hundred fifty thousand, one hundred twenty-three".