77330225 has 12 divisors (see below), whose sum is σ = 109588224. Its totient is φ = 53026320.

The previous prime is 77330207. The next prime is 77330251. The reversal of 77330225 is 52203377.

It is not a de Polignac number, because 77330225 - 2¹⁰ = 77329201 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, 220769 + ... + 221118.

It is an arithmetic number, because the mean of its divisors is an integer number (9132352).

Almost surely, 2^77330225 is an apocalyptic number.

It is an amenable number.

77330225 is a deficient number, since it is larger than the sum of its proper divisors (32257999).

77330225 is a wasteful number, since it uses less digits than its factorization.

77330225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441904 (or 441899 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 77330225 is about 8793.7605721329. The cubic root of 77330225 is about 426.0393936694.

The spelling of 77330225 in words is "seventy-seven million, three hundred thirty thousand, two hundred twenty-five".