25445634 has 32 divisors (see below), whose sum is σ = 54509760. Its totient is φ = 7890432.

The previous prime is 25445633. The next prime is 25445647. The reversal of 25445634 is 43654452.

It is a junction number, because it is equal to n+sod(n) for n = 25445595 and 25445604.

It is not an unprimeable number, because it can be changed into a prime (25445633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7677 + ... + 10479.

It is an arithmetic number, because the mean of its divisors is an integer number (1703430).

Almost surely, 2^25445634 is an apocalyptic number.

25445634 is an abundant number, since it is smaller than the sum of its proper divisors (29064126).

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

25445634 is a wasteful number, since it uses less digits than its factorization.

25445634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914.

The product of its digits is 57600, while the sum is 33.

The square root of 25445634 is about 5044.3665608280. The cubic root of 25445634 is about 294.1289406189.

The spelling of 25445634 in words is "twenty-five million, four hundred forty-five thousand, six hundred thirty-four".