19730810427425 has 6 divisors (see below), whose sum is σ = 24466204930038. Its totient is φ = 15784648341920.

The previous prime is 19730810427401. The next prime is 19730810427541. The reversal of 19730810427425 is 52472401803791.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 947523134464 + 18783287292961 = 973408^2 + 4333969^2 .

It is not a de Polignac number, because 19730810427425 - 2²⁰ = 19730809378849 is a prime.

It is a super-2 number, since 2×19730810427425² (a number of 27 digits) contains 22 as substring.

It is a Duffinian 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, 394616208524 + ... + 394616208573.

It is an arithmetic number, because the mean of its divisors is an integer number (4077700821673).

Almost surely, 2^{19730810427425} is an apocalyptic number.

It is an amenable number.

19730810427425 is a deficient number, since it is larger than the sum of its proper divisors (4735394502613).

19730810427425 is an equidigital number, since it uses as much as digits as its factorization.

19730810427425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789232417107 (or 789232417102 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 19730810427425 in words is "nineteen trillion, seven hundred thirty billion, eight hundred ten million, four hundred twenty-seven thousand, four hundred twenty-five".