25621234 has 16 divisors (see below), whose sum is σ = 40780800. Its totient is φ = 12038544.

The previous prime is 25621199. The next prime is 25621237. The reversal of 25621234 is 43212652.

It is a junction number, because it is equal to n+sod(n) for n = 25621199 and 25621208.

It is not an unprimeable number, because it can be changed into a prime (25621237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2172 + ... + 7480.

It is an arithmetic number, because the mean of its divisors is an integer number (2548800).

Almost surely, 2^25621234 is an apocalyptic number.

25621234 is a deficient number, since it is larger than the sum of its proper divisors (15159566).

25621234 is a wasteful number, since it uses less digits than its factorization.

25621234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457.

The product of its digits is 2880, while the sum is 25.

The square root of 25621234 is about 5061.7421901950. The cubic root of 25621234 is about 294.8039835437.

Adding to 25621234 its reverse (43212652), we get a palindrome (68833886).

The spelling of 25621234 in words is "twenty-five million, six hundred twenty-one thousand, two hundred thirty-four".