25421234 has 8 divisors (see below), whose sum is σ = 38254620. Its totient is φ = 12669696.

The previous prime is 25421161. The next prime is 25421237. The reversal of 25421234 is 43212452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19404025 + 6017209 = 4405^2 + 2453^2 .

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

It is not an unprimeable number, because it can be changed into a prime (25421237) 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, 19679 + ... + 20930.

Almost surely, 2^25421234 is an apocalyptic number.

25421234 is a deficient number, since it is larger than the sum of its proper divisors (12833386).

25421234 is a wasteful number, since it uses less digits than its factorization.

25421234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40924.

The product of its digits is 1920, while the sum is 23.

The square root of 25421234 is about 5041.9474412175. The cubic root of 25421234 is about 294.0348964393.

Adding to 25421234 its reverse (43212452), we get a palindrome (68633686).

The spelling of 25421234 in words is "twenty-five million, four hundred twenty-one thousand, two hundred thirty-four".