25285123 has 4 divisors (see below), whose sum is σ = 25416328. Its totient is φ = 25153920.

The previous prime is 25285121. The next prime is 25285133. The reversal of 25285123 is 32158252.

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

It is a cyclic number.

It is not a de Polignac number, because 25285123 - 2¹ = 25285121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25285091 and 25285100.

It is not an unprimeable number, because it can be changed into a prime (25285121) 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, 65313 + ... + 65698.

It is an arithmetic number, because the mean of its divisors is an integer number (6354082).

Almost surely, 2^25285123 is an apocalyptic number.

25285123 is a deficient number, since it is larger than the sum of its proper divisors (131205).

25285123 is a wasteful number, since it uses less digits than its factorization.

25285123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131204.

The product of its digits is 4800, while the sum is 28.

The square root of 25285123 is about 5028.4314651788. The cubic root of 25285123 is about 293.5091807477.

The spelling of 25285123 in words is "twenty-five million, two hundred eighty-five thousand, one hundred twenty-three".