25289155 has 4 divisors (see below), whose sum is σ = 30346992. Its totient is φ = 20231320.

The previous prime is 25289153. The next prime is 25289179. The reversal of 25289155 is 55198252.

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

It is not a de Polignac number, because 25289155 - 2¹ = 25289153 is a prime.

It is a super-2 number, since 2×25289155² = 1279082721228050, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (25289153) 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, 2528911 + ... + 2528920.

It is an arithmetic number, because the mean of its divisors is an integer number (7586748).

Almost surely, 2^25289155 is an apocalyptic number.

25289155 is a deficient number, since it is larger than the sum of its proper divisors (5057837).

25289155 is an equidigital number, since it uses as much as digits as its factorization.

25289155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057836.

The product of its digits is 36000, while the sum is 37.

The square root of 25289155 is about 5028.8323694472. The cubic root of 25289155 is about 293.5247810425.

It can be divided in two parts, 25 and 289155, that added together give a triangular number (289180 = T₇₆₀).

The spelling of 25289155 in words is "twenty-five million, two hundred eighty-nine thousand, one hundred fifty-five".