25340238 has 96 divisors (see below), whose sum is σ = 70087680. Its totient is φ = 6425280.

The previous prime is 25340233. The next prime is 25340257. The reversal of 25340238 is 83204352.

25340238 is a `hidden beast` number, since 253 + 402 + 3 + 8 = 666.

It is a super-3 number, since 3×25340238³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25340233) 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 47 ways as a sum of consecutive naturals, for example, 64948 + ... + 65336.

It is an arithmetic number, because the mean of its divisors is an integer number (730080).

Almost surely, 2^25340238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25340238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35043840).

25340238 is an abundant number, since it is smaller than the sum of its proper divisors (44747442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25340238 is a wasteful number, since it uses less digits than its factorization.

25340238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 25340238 is about 5033.9088191981. The cubic root of 25340238 is about 293.7222839098.

The spelling of 25340238 in words is "twenty-five million, three hundred forty thousand, two hundred thirty-eight".