25434025349 has 2 divisors, whose sum is σ = 25434025350. Its totient is φ = 25434025348.

The previous prime is 25434025319. The next prime is 25434025387. The reversal of 25434025349 is 94352043452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14736260449 + 10697764900 = 121393^2 + 103430^2 .

It is a cyclic number.

It is not a de Polignac number, because 25434025349 - 2²⁴ = 25417248133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25434025319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717012674 + 12717012675.

It is an arithmetic number, because the mean of its divisors is an integer number (12717012675).

Almost surely, 2^25434025349 is an apocalyptic number.

It is an amenable number.

25434025349 is a deficient number, since it is larger than the sum of its proper divisors (1).

25434025349 is an equidigital number, since it uses as much as digits as its factorization.

25434025349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 25434025349 in words is "twenty-five billion, four hundred thirty-four million, twenty-five thousand, three hundred forty-nine".