25345353641 has 2 divisors, whose sum is σ = 25345353642. Its totient is φ = 25345353640.

The previous prime is 25345353623. The next prime is 25345353667. The reversal of 25345353641 is 14635354352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15484069225 + 9861284416 = 124435^2 + 99304^2 .

It is a cyclic number.

It is not a de Polignac number, because 25345353641 - 2⁶ = 25345353577 is a prime.

It is not a weakly prime, because it can be changed into another prime (25345353611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12672676820 + 12672676821.

It is an arithmetic number, because the mean of its divisors is an integer number (12672676821).

Almost surely, 2^25345353641 is an apocalyptic number.

It is an amenable number.

25345353641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25345353641 is an equidigital number, since it uses as much as digits as its factorization.

25345353641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 41.

The spelling of 25345353641 in words is "twenty-five billion, three hundred forty-five million, three hundred fifty-three thousand, six hundred forty-one".