77343953225 has 180 divisors, whose sum is σ = 128604352128. Its totient is φ = 46018526400.

The previous prime is 77343953173. The next prime is 77343953227. The reversal of 77343953225 is 52235934377.

It is a happy number.

It is not a de Polignac number, because 77343953225 - 2¹² = 77343949129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77343953227) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 167049344 + ... + 167049806.

Almost surely, 2^77343953225 is an apocalyptic number.

It is an amenable number.

77343953225 is a deficient number, since it is larger than the sum of its proper divisors (51260398903).

77343953225 is a wasteful number, since it uses less digits than its factorization.

77343953225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 509 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 50.

The spelling of 77343953225 in words is "seventy-seven billion, three hundred forty-three million, nine hundred fifty-three thousand, two hundred twenty-five".