25857423 has 12 divisors (see below), whose sum is σ = 39315640. Its totient is φ = 16330896.

The previous prime is 25857421. The next prime is 25857431. The reversal of 25857423 is 32475852.

25857423 is a `hidden beast` number, since 2 + 585 + 74 + 2 + 3 = 666.

It is not a de Polignac number, because 25857423 - 2¹ = 25857421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25857421) 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, 75436 + ... + 75777.

Almost surely, 2^25857423 is an apocalyptic number.

25857423 is a deficient number, since it is larger than the sum of its proper divisors (13458217).

25857423 is a wasteful number, since it uses less digits than its factorization.

25857423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151238 (or 151235 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 25857423 is about 5085.0194689893. The cubic root of 25857423 is about 295.7070962735.

The spelling of 25857423 in words is "twenty-five million, eight hundred fifty-seven thousand, four hundred twenty-three".