25624075472917 has 2 divisors, whose sum is σ = 25624075472918. Its totient is φ = 25624075472916.

The previous prime is 25624075472911. The next prime is 25624075472929. The reversal of 25624075472917 is 71927457042652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16739300294161 + 8884775178756 = 4091369^2 + 2980734^2 .

It is a cyclic number.

It is not a de Polignac number, because 25624075472917 - 2²³ = 25624067084309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25624075472911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12812037736458 + 12812037736459.

It is an arithmetic number, because the mean of its divisors is an integer number (12812037736459).

Almost surely, 2^{25624075472917} is an apocalyptic number.

It is an amenable number.

25624075472917 is a deficient number, since it is larger than the sum of its proper divisors (1).

25624075472917 is an equidigital number, since it uses as much as digits as its factorization.

25624075472917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59270400, while the sum is 61.

The spelling of 25624075472917 in words is "twenty-five trillion, six hundred twenty-four billion, seventy-five million, four hundred seventy-two thousand, nine hundred seventeen".