25634238 has 16 divisors (see below), whose sum is σ = 58592640. Its totient is φ = 7324056.

The previous prime is 25634227. The next prime is 25634239. The reversal of 25634238 is 83243652.

It is a happy number.

It is a super-2 number, since 2×25634238² = 1314228315681288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25634199 and 25634208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25634239) 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, 305128 + ... + 305211.

It is an arithmetic number, because the mean of its divisors is an integer number (3662040).

Almost surely, 2^25634238 is an apocalyptic number.

25634238 is an abundant number, since it is smaller than the sum of its proper divisors (32958402).

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

25634238 is a wasteful number, since it uses less digits than its factorization.

25634238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610351.

The product of its digits is 34560, while the sum is 33.

The square root of 25634238 is about 5063.0265652078. The cubic root of 25634238 is about 294.8538508087.

The spelling of 25634238 in words is "twenty-five million, six hundred thirty-four thousand, two hundred thirty-eight".