25457422 has 4 divisors (see below), whose sum is σ = 38186136. Its totient is φ = 12728710.

The previous prime is 25457407. The next prime is 25457423. The reversal of 25457422 is 22475452.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25457423) 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 as a sum of consecutive naturals, namely, 6364354 + ... + 6364357.

It is an arithmetic number, because the mean of its divisors is an integer number (9546534).

Almost surely, 2^25457422 is an apocalyptic number.

25457422 is a deficient number, since it is larger than the sum of its proper divisors (12728714).

25457422 is a wasteful number, since it uses less digits than its factorization.

25457422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12728713.

The product of its digits is 22400, while the sum is 31.

The square root of 25457422 is about 5045.5348576737. The cubic root of 25457422 is about 294.1743532122.

The spelling of 25457422 in words is "twenty-five million, four hundred fifty-seven thousand, four hundred twenty-two".