25650264949 has 2 divisors, whose sum is σ = 25650264950. Its totient is φ = 25650264948.

The previous prime is 25650264947. The next prime is 25650264961. The reversal of 25650264949 is 94946205652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25602240049 + 48024900 = 160007^2 + 6930^2 .

It is a cyclic number.

It is not a de Polignac number, because 25650264949 - 2¹ = 25650264947 is a prime.

Together with 25650264947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25650264896 and 25650264905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25650264947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825132474 + 12825132475.

It is an arithmetic number, because the mean of its divisors is an integer number (12825132475).

Almost surely, 2^25650264949 is an apocalyptic number.

It is an amenable number.

25650264949 is a deficient number, since it is larger than the sum of its proper divisors (1).

25650264949 is an equidigital number, since it uses as much as digits as its factorization.

25650264949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 25650264949 in words is "twenty-five billion, six hundred fifty million, two hundred sixty-four thousand, nine hundred forty-nine".