25351207213 has 2 divisors, whose sum is σ = 25351207214. Its totient is φ = 25351207212.

The previous prime is 25351207201. The next prime is 25351207241. The reversal of 25351207213 is 31270215352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23176104169 + 2175103044 = 152237^2 + 46638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25351207213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25351207243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12675603606 + 12675603607.

It is an arithmetic number, because the mean of its divisors is an integer number (12675603607).

Almost surely, 2^25351207213 is an apocalyptic number.

It is an amenable number.

25351207213 is a deficient number, since it is larger than the sum of its proper divisors (1).

25351207213 is an equidigital number, since it uses as much as digits as its factorization.

25351207213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 25351207213 in words is "twenty-five billion, three hundred fifty-one million, two hundred seven thousand, two hundred thirteen".