77425545 has 8 divisors (see below), whose sum is σ = 123880896. Its totient is φ = 41293616.

The previous prime is 77425541. The next prime is 77425547. The reversal of 77425545 is 54552477.

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

It is a cyclic number.

It is not a de Polignac number, because 77425545 - 2² = 77425541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77425541) 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, 2580837 + ... + 2580866.

It is an arithmetic number, because the mean of its divisors is an integer number (15485112).

Almost surely, 2^77425545 is an apocalyptic number.

It is an amenable number.

77425545 is a deficient number, since it is larger than the sum of its proper divisors (46455351).

77425545 is a wasteful number, since it uses less digits than its factorization.

77425545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161711.

The product of its digits is 196000, while the sum is 39.

The square root of 77425545 is about 8799.1786548518. The cubic root of 77425545 is about 426.2143722569.

The spelling of 77425545 in words is "seventy-seven million, four hundred twenty-five thousand, five hundred forty-five".