42725449651 has 2 divisors, whose sum is σ = 42725449652. Its totient is φ = 42725449650.

The previous prime is 42725449583. The next prime is 42725449747. The reversal of 42725449651 is 15694452724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42725449651 - 2²⁵ = 42691895219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42725449595 and 42725449604.

It is not a weakly prime, because it can be changed into another prime (42725419651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21362724825 + 21362724826.

It is an arithmetic number, because the mean of its divisors is an integer number (21362724826).

Almost surely, 2^42725449651 is an apocalyptic number.

42725449651 is a deficient number, since it is larger than the sum of its proper divisors (1).

42725449651 is an equidigital number, since it uses as much as digits as its factorization.

42725449651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 49.

The spelling of 42725449651 in words is "forty-two billion, seven hundred twenty-five million, four hundred forty-nine thousand, six hundred fifty-one".