77349327425 has 12 divisors (see below), whose sum is σ = 96862804476. Its totient is φ = 61266792000.

The previous prime is 77349327397. The next prime is 77349327439. The reversal of 77349327425 is 52472394377.

It can be written as a sum of positive squares in 6 ways, for example, as 16978871809 + 60370455616 = 130303^2 + 245704^2 .

It is not a de Polignac number, because 77349327425 - 2¹⁶ = 77349261889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15314174 + ... + 15319223.

It is an arithmetic number, because the mean of its divisors is an integer number (8071900373).

Almost surely, 2^77349327425 is an apocalyptic number.

It is an amenable number.

77349327425 is a deficient number, since it is larger than the sum of its proper divisors (19513477051).

77349327425 is a wasteful number, since it uses less digits than its factorization.

77349327425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30633508 (or 30633503 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 53.

The spelling of 77349327425 in words is "seventy-seven billion, three hundred forty-nine million, three hundred twenty-seven thousand, four hundred twenty-five".