77725563 has 8 divisors (see below), whose sum is σ = 104207376. Its totient is φ = 51530400.

The previous prime is 77725541. The next prime is 77725573. The reversal of 77725563 is 36552777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77725563 - 2⁶ = 77725499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77725573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71028 + ... + 72113.

It is an arithmetic number, because the mean of its divisors is an integer number (13025922).

Almost surely, 2^77725563 is an apocalyptic number.

77725563 is a deficient number, since it is larger than the sum of its proper divisors (26481813).

77725563 is a wasteful number, since it uses less digits than its factorization.

77725563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143325.

The product of its digits is 308700, while the sum is 42.

The square root of 77725563 is about 8816.2102402336. The cubic root of 77725563 is about 426.7641786267.

The spelling of 77725563 in words is "seventy-seven million, seven hundred twenty-five thousand, five hundred sixty-three".