25459434 has 160 divisors (see below), whose sum is σ = 77083776. Its totient is φ = 6065280.

The previous prime is 25459433. The next prime is 25459453. The reversal of 25459434 is 43495452.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25459433) 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 79 ways as a sum of consecutive naturals, for example, 162084 + ... + 162240.

Almost surely, 2^25459434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25459434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38541888).

25459434 is an abundant number, since it is smaller than the sum of its proper divisors (51624342).

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

25459434 is a wasteful number, since it uses less digits than its factorization.

25459434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 193 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 25459434 is about 5045.7342379479. The cubic root of 25459434 is about 294.1821029260.

The spelling of 25459434 in words is "twenty-five million, four hundred fifty-nine thousand, four hundred thirty-four".