25429438 has 8 divisors (see below), whose sum is σ = 38241432. Its totient is φ = 12682296.

The previous prime is 25429409. The next prime is 25429441. The reversal of 25429438 is 83492452.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 25429397 and 25429406.

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, 15220 + ... + 16807.

It is an arithmetic number, because the mean of its divisors is an integer number (4780179).

Almost surely, 2^25429438 is an apocalyptic number.

25429438 is a deficient number, since it is larger than the sum of its proper divisors (12811994).

25429438 is a wasteful number, since it uses less digits than its factorization.

25429438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32426.

The product of its digits is 69120, while the sum is 37.

The square root of 25429438 is about 5042.7609501145. The cubic root of 25429438 is about 294.0665235801.

It can be divided in two parts, 254 and 29438, that added together give a palindrome (29692).

The spelling of 25429438 in words is "twenty-five million, four hundred twenty-nine thousand, four hundred thirty-eight".