25457830 has 8 divisors (see below), whose sum is σ = 45824112. Its totient is φ = 10183128.

The previous prime is 25457819. The next prime is 25457867. The reversal of 25457830 is 3875452.

It is a happy number.

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

It is a super-2 number, since 2×25457830² = 1296202216617800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1272882 + ... + 1272901.

It is an arithmetic number, because the mean of its divisors is an integer number (5728014).

Almost surely, 2^25457830 is an apocalyptic number.

25457830 is a deficient number, since it is larger than the sum of its proper divisors (20366282).

25457830 is a wasteful number, since it uses less digits than its factorization.

25457830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545790.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 25457830 is about 5045.5752893005. The cubic root of 25457830 is about 294.1759247577.

The spelling of 25457830 in words is "twenty-five million, four hundred fifty-seven thousand, eight hundred thirty".