25478273 has 4 divisors (see below), whose sum is σ = 26586048. Its totient is φ = 24370500.

The previous prime is 25478263. The next prime is 25478281. The reversal of 25478273 is 37287452.

25478273 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25478273 - 2²⁴ = 8701057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25478263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553853 + ... + 553898.

It is an arithmetic number, because the mean of its divisors is an integer number (6646512).

Almost surely, 2^25478273 is an apocalyptic number.

25478273 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25478273 is a deficient number, since it is larger than the sum of its proper divisors (1107775).

25478273 is a wasteful number, since it uses less digits than its factorization.

25478273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107774.

The product of its digits is 94080, while the sum is 38.

The square root of 25478273 is about 5047.6007171725. The cubic root of 25478273 is about 294.2546461755.

The spelling of 25478273 in words is "twenty-five million, four hundred seventy-eight thousand, two hundred seventy-three".