25621241 has 8 divisors (see below), whose sum is σ = 26828160. Its totient is φ = 24422112.

The previous prime is 25621237. The next prime is 25621259. The reversal of 25621241 is 14212652.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25621241 - 2² = 25621237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25621441) 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, 5420 + ... + 8978.

It is an arithmetic number, because the mean of its divisors is an integer number (3353520).

Almost surely, 2^25621241 is an apocalyptic number.

It is an amenable number.

25621241 is a deficient number, since it is larger than the sum of its proper divisors (1206919).

25621241 is a wasteful number, since it uses less digits than its factorization.

25621241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3895.

The product of its digits is 960, while the sum is 23.

The square root of 25621241 is about 5061.7428816565. The cubic root of 25621241 is about 294.8040103915.

Adding to 25621241 its reverse (14212652), we get a palindrome (39833893).

The spelling of 25621241 in words is "twenty-five million, six hundred twenty-one thousand, two hundred forty-one".