25266239 has 4 divisors (see below), whose sum is σ = 25276824. Its totient is φ = 25255656.

The previous prime is 25266211. The next prime is 25266247. The reversal of 25266239 is 93266252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25266239 - 2¹² = 25262143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25266199 and 25266208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25266289) 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, 164 + ... + 7110.

It is an arithmetic number, because the mean of its divisors is an integer number (6319206).

Almost surely, 2^25266239 is an apocalyptic number.

25266239 is a deficient number, since it is larger than the sum of its proper divisors (10585).

25266239 is an equidigital number, since it uses as much as digits as its factorization.

25266239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10584.

The product of its digits is 38880, while the sum is 35.

The square root of 25266239 is about 5026.5533917387. The cubic root of 25266239 is about 293.4360941905.

The spelling of 25266239 in words is "twenty-five million, two hundred sixty-six thousand, two hundred thirty-nine".