25263762739 has 2 divisors, whose sum is σ = 25263762740. Its totient is φ = 25263762738.

The previous prime is 25263762721. The next prime is 25263762779. The reversal of 25263762739 is 93726736252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25263762739 - 2¹³ = 25263754547 is a prime.

It is not a weakly prime, because it can be changed into another prime (25263762709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12631881369 + 12631881370.

It is an arithmetic number, because the mean of its divisors is an integer number (12631881370).

Almost surely, 2^25263762739 is an apocalyptic number.

25263762739 is a deficient number, since it is larger than the sum of its proper divisors (1).

25263762739 is an equidigital number, since it uses as much as digits as its factorization.

25263762739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 52.

The spelling of 25263762739 in words is "twenty-five billion, two hundred sixty-three million, seven hundred sixty-two thousand, seven hundred thirty-nine".