25457442 has 8 divisors (see below), whose sum is σ = 50914896. Its totient is φ = 8485812.

The previous prime is 25457441. The next prime is 25457461. The reversal of 25457442 is 24475452.

It is a sphenic number, since it is the product of 3 distinct primes.

25457442 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (25457441) 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, 2121448 + ... + 2121459.

It is an arithmetic number, because the mean of its divisors is an integer number (6364362).

Almost surely, 2^25457442 is an apocalyptic number.

25457442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25457442 is a wasteful number, since it uses less digits than its factorization.

25457442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242912.

The product of its digits is 44800, while the sum is 33.

The square root of 25457442 is about 5045.5368396237. The cubic root of 25457442 is about 294.1744302491.

The spelling of 25457442 in words is "twenty-five million, four hundred fifty-seven thousand, four hundred forty-two".