20317711825 has 24 divisors (see below), whose sum is σ = 26300102400. Its totient is φ = 15541109760.

The previous prime is 20317711819. The next prime is 20317711849. The reversal of 20317711825 is 52811771302.

It is not a de Polignac number, because 20317711825 - 2¹⁹ = 20317187537 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1787761 + ... + 1799089.

It is an arithmetic number, because the mean of its divisors is an integer number (1095837600).

Almost surely, 2^20317711825 is an apocalyptic number.

20317711825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20317711825 is a deficient number, since it is larger than the sum of its proper divisors (5982390575).

20317711825 is a wasteful number, since it uses less digits than its factorization.

20317711825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14481 (or 14476 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 20317711825 in words is "twenty billion, three hundred seventeen million, seven hundred eleven thousand, eight hundred twenty-five".