25899426 has 96 divisors (see below), whose sum is σ = 69608448. Its totient is φ = 7056720.

The previous prime is 25899389. The next prime is 25899427. The reversal of 25899426 is 62499852.

It is not an unprimeable number, because it can be changed into a prime (25899427) 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 in 47 ways as a sum of consecutive naturals, for example, 78081 + ... + 78411.

It is an arithmetic number, because the mean of its divisors is an integer number (725088).

Almost surely, 2^25899426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25899426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34804224).

25899426 is an abundant number, since it is smaller than the sum of its proper divisors (43709022).

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

25899426 is a wasteful number, since it uses less digits than its factorization.

25899426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 366 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 25899426 is about 5089.1478658023. The cubic root of 25899426 is about 295.8671259597.

The spelling of 25899426 in words is "twenty-five million, eight hundred ninety-nine thousand, four hundred twenty-six".