20495725043 has 2 divisors, whose sum is σ = 20495725044. Its totient is φ = 20495725042.

The previous prime is 20495725039. The next prime is 20495725057. The reversal of 20495725043 is 34052759402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20495725043 - 2² = 20495725039 is a prime.

It is not a weakly prime, because it can be changed into another prime (20495725093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10247862521 + 10247862522.

It is an arithmetic number, because the mean of its divisors is an integer number (10247862522).

Almost surely, 2^20495725043 is an apocalyptic number.

20495725043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20495725043 is an equidigital number, since it uses as much as digits as its factorization.

20495725043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 20495725043 in words is "twenty billion, four hundred ninety-five million, seven hundred twenty-five thousand, forty-three".