61725223403447 has 2 divisors, whose sum is σ = 61725223403448. Its totient is φ = 61725223403446.

The previous prime is 61725223403411. The next prime is 61725223403453. The reversal of 61725223403447 is 74430432252716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61725223403447 - 2³⁰ = 61724149661623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61725223403395 and 61725223403404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61725223403747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30862611701723 + 30862611701724.

It is an arithmetic number, because the mean of its divisors is an integer number (30862611701724).

Almost surely, 2^{61725223403447} is an apocalyptic number.

61725223403447 is a deficient number, since it is larger than the sum of its proper divisors (1).

61725223403447 is an equidigital number, since it uses as much as digits as its factorization.

61725223403447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 50.

The spelling of 61725223403447 in words is "sixty-one trillion, seven hundred twenty-five billion, two hundred twenty-three million, four hundred three thousand, four hundred forty-seven".