25714478 has 4 divisors (see below), whose sum is σ = 38571720. Its totient is φ = 12857238.

The previous prime is 25714477. The next prime is 25714537. The reversal of 25714478 is 87441752.

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

It is a super-2 number, since 2×25714478² = 1322468757624968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25714477) by changing a digit.

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, 6428618 + ... + 6428621.

It is an arithmetic number, because the mean of its divisors is an integer number (9642930).

Almost surely, 2^25714478 is an apocalyptic number.

25714478 is a deficient number, since it is larger than the sum of its proper divisors (12857242).

25714478 is a wasteful number, since it uses less digits than its factorization.

25714478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12857241.

The product of its digits is 62720, while the sum is 38.

The square root of 25714478 is about 5070.9444879628. The cubic root of 25714478 is about 295.1611797548.

The spelling of 25714478 in words is "twenty-five million, seven hundred fourteen thousand, four hundred seventy-eight".