25740258 has 8 divisors (see below), whose sum is σ = 51480528. Its totient is φ = 8580084.

The previous prime is 25740257. The next prime is 25740263. The reversal of 25740258 is 85204752.

It is a sphenic number, since it is the product of 3 distinct primes.

25740258 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (25740257) 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, 2145016 + ... + 2145027.

It is an arithmetic number, because the mean of its divisors is an integer number (6435066).

Almost surely, 2^25740258 is an apocalyptic number.

25740258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25740258 is a wasteful number, since it uses less digits than its factorization.

25740258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290048.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 25740258 is about 5073.4857839556. The cubic root of 25740258 is about 295.2597845660.

The spelling of 25740258 in words is "twenty-five million, seven hundred forty thousand, two hundred fifty-eight".