25416478 has 4 divisors (see below), whose sum is σ = 38124720. Its totient is φ = 12708238.

The previous prime is 25416463. The next prime is 25416491. The reversal of 25416478 is 87461452.

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

It is a congruent 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 as a sum of consecutive naturals, namely, 6354118 + ... + 6354121.

It is an arithmetic number, because the mean of its divisors is an integer number (9531180).

Almost surely, 2^25416478 is an apocalyptic number.

25416478 is a deficient number, since it is larger than the sum of its proper divisors (12708242).

25416478 is a wasteful number, since it uses less digits than its factorization.

25416478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12708241.

The product of its digits is 53760, while the sum is 37.

The square root of 25416478 is about 5041.4757760005. The cubic root of 25416478 is about 294.0165585256.

The spelling of 25416478 in words is "twenty-five million, four hundred sixteen thousand, four hundred seventy-eight".