24561012257 has 2 divisors, whose sum is σ = 24561012258. Its totient is φ = 24561012256.

The previous prime is 24561012193. The next prime is 24561012317. The reversal of 24561012257 is 75221016542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19548513856 + 5012498401 = 139816^2 + 70799^2 .

It is a cyclic number.

It is not a de Polignac number, because 24561012257 - 2⁶ = 24561012193 is a prime.

It is not a weakly prime, because it can be changed into another prime (24561012557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12280506128 + 12280506129.

It is an arithmetic number, because the mean of its divisors is an integer number (12280506129).

Almost surely, 2^24561012257 is an apocalyptic number.

It is an amenable number.

24561012257 is a deficient number, since it is larger than the sum of its proper divisors (1).

24561012257 is an equidigital number, since it uses as much as digits as its factorization.

24561012257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 35.

Adding to 24561012257 its reverse (75221016542), we get a palindrome (99782028799).

The spelling of 24561012257 in words is "twenty-four billion, five hundred sixty-one million, twelve thousand, two hundred fifty-seven".