25720750031 has 2 divisors, whose sum is σ = 25720750032. Its totient is φ = 25720750030.

The previous prime is 25720750021. The next prime is 25720750061. The reversal of 25720750031 is 13005702752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25720750031 - 2¹⁰ = 25720749007 is a prime.

It is a super-2 number, since 2×25720750031² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25720750031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25720750001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12860375015 + 12860375016.

It is an arithmetic number, because the mean of its divisors is an integer number (12860375016).

Almost surely, 2^25720750031 is an apocalyptic number.

25720750031 is a deficient number, since it is larger than the sum of its proper divisors (1).

25720750031 is an equidigital number, since it uses as much as digits as its factorization.

25720750031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 32.

The spelling of 25720750031 in words is "twenty-five billion, seven hundred twenty million, seven hundred fifty thousand, thirty-one".