25897434 has 8 divisors (see below), whose sum is σ = 51794880. Its totient is φ = 8632476.

The previous prime is 25897433. The next prime is 25897441. The reversal of 25897434 is 43479852.

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

25897434 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (25897433) 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 in 3 ways as a sum of consecutive naturals, for example, 2158114 + ... + 2158125.

It is an arithmetic number, because the mean of its divisors is an integer number (6474360).

Almost surely, 2^25897434 is an apocalyptic number.

25897434 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.

25897434 is a wasteful number, since it uses less digits than its factorization.

25897434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316244.

The product of its digits is 241920, while the sum is 42.

The square root of 25897434 is about 5088.9521514748. The cubic root of 25897434 is about 295.8595404322.

The spelling of 25897434 in words is "twenty-five million, eight hundred ninety-seven thousand, four hundred thirty-four".