24920257 has 2 divisors, whose sum is σ = 24920258. Its totient is φ = 24920256.

The previous prime is 24920239. The next prime is 24920279. The reversal of 24920257 is 75202942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18524416 + 6395841 = 4304^2 + 2529^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24920257 is a prime.

It is not a weakly prime, because it can be changed into another prime (24920227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12460128 + 12460129.

It is an arithmetic number, because the mean of its divisors is an integer number (12460129).

Almost surely, 2^24920257 is an apocalyptic number.

It is an amenable number.

24920257 is a deficient number, since it is larger than the sum of its proper divisors (1).

24920257 is an equidigital number, since it uses as much as digits as its factorization.

24920257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 24920257 is about 4992.0193308921. The cubic root of 24920257 is about 292.0905494181.

The spelling of 24920257 in words is "twenty-four million, nine hundred twenty thousand, two hundred fifty-seven".