24875621 has 2 divisors, whose sum is σ = 24875622. Its totient is φ = 24875620.

The previous prime is 24875569. The next prime is 24875647. The reversal of 24875621 is 12657842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13912900 + 10962721 = 3730^2 + 3311^2 .

It is a cyclic number.

It is not a de Polignac number, because 24875621 - 2²² = 20681317 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24875651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12437810 + 12437811.

It is an arithmetic number, because the mean of its divisors is an integer number (12437811).

Almost surely, 2^24875621 is an apocalyptic number.

It is an amenable number.

24875621 is a deficient number, since it is larger than the sum of its proper divisors (1).

24875621 is an equidigital number, since it uses as much as digits as its factorization.

24875621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 24875621 is about 4987.5465912611. The cubic root of 24875621 is about 291.9160522112.

The spelling of 24875621 in words is "twenty-four million, eight hundred seventy-five thousand, six hundred twenty-one".