25711316720 has 40 divisors (see below), whose sum is σ = 59816540544. Its totient is φ = 10278035712.

The previous prime is 25711316717. The next prime is 25711316723. The reversal of 25711316720 is 2761311752.

It is an interprime number because it is at equal distance from previous prime (25711316717) and next prime (25711316723).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×25711316720² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25711316723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27137 + ... + 228383.

Almost surely, 2^25711316720 is an apocalyptic number.

25711316720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25711316720 is an abundant number, since it is smaller than the sum of its proper divisors (34105223824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25711316720 is a wasteful number, since it uses less digits than its factorization.

25711316720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202857 (or 202851 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 25711316720 in words is "twenty-five billion, seven hundred eleven million, three hundred sixteen thousand, seven hundred twenty".