25001363873 has 2 divisors, whose sum is σ = 25001363874. Its totient is φ = 25001363872.

The previous prime is 25001363867. The next prime is 25001363917. The reversal of 25001363873 is 37836310052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22327232929 + 2674130944 = 149423^2 + 51712^2 .

It is a cyclic number.

It is not a de Polignac number, because 25001363873 - 2¹⁶ = 25001298337 is a prime.

It is not a weakly prime, because it can be changed into another prime (25001363173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500681936 + 12500681937.

It is an arithmetic number, because the mean of its divisors is an integer number (12500681937).

Almost surely, 2^25001363873 is an apocalyptic number.

It is an amenable number.

25001363873 is a deficient number, since it is larger than the sum of its proper divisors (1).

25001363873 is an equidigital number, since it uses as much as digits as its factorization.

25001363873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 25001363873 in words is "twenty-five billion, one million, three hundred sixty-three thousand, eight hundred seventy-three".