25340155 has 4 divisors (see below), whose sum is σ = 30408192. Its totient is φ = 20272120.

The previous prime is 25340131. The next prime is 25340177. The reversal of 25340155 is 55104352.

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

It is not a de Polignac number, because 25340155 - 2¹¹ = 25338107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2534011 + ... + 2534020.

It is an arithmetic number, because the mean of its divisors is an integer number (7602048).

Almost surely, 2^25340155 is an apocalyptic number.

25340155 is a deficient number, since it is larger than the sum of its proper divisors (5068037).

25340155 is an equidigital number, since it uses as much as digits as its factorization.

25340155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5068036.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 25340155 is about 5033.9005751008. The cubic root of 25340155 is about 293.7219632212.

The spelling of 25340155 in words is "twenty-five million, three hundred forty thousand, one hundred fifty-five".