20773107725 has 6 divisors (see below), whose sum is σ = 25758653610. Its totient is φ = 16618486160.

The previous prime is 20773107697. The next prime is 20773107743. The reversal of 20773107725 is 52770137702.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6825733924 + 13947373801 = 82618^2 + 118099^2 .

It is not a de Polignac number, because 20773107725 - 2²² = 20768913421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415462130 + ... + 415462179.

It is an arithmetic number, because the mean of its divisors is an integer number (4293108935).

Almost surely, 2^20773107725 is an apocalyptic number.

20773107725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20773107725 is a deficient number, since it is larger than the sum of its proper divisors (4985545885).

20773107725 is an equidigital number, since it uses as much as digits as its factorization.

20773107725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830924319 (or 830924314 counting only the distinct ones).

The product of its (nonzero) digits is 144060, while the sum is 41.

The spelling of 20773107725 in words is "twenty billion, seven hundred seventy-three million, one hundred seven thousand, seven hundred twenty-five".