76881068194225 has 9 divisors (see below), whose sum is σ = 95332578923617. Its totient is φ = 61504819482640.

The previous prime is 76881068194223. The next prime is 76881068194243. The reversal of 76881068194225 is 52249186018867.

The square root of 76881068194225 is 8768185.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2420460743089 + 74460607451136 = 1555783^2 + 8629056^2 .

It is not a de Polignac number, because 76881068194225 - 2¹ = 76881068194223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76881068194223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 42964107 + ... + 44717743.

Almost surely, 2^{76881068194225} is an apocalyptic number.

76881068194225 is the 8768185-th square number.

76881068194225 is the 4384093-rd centered octagonal number.

It is an amenable number.

76881068194225 is a deficient number, since it is larger than the sum of its proper divisors (18451510729392).

76881068194225 is an frugal number, since it uses more digits than its factorization.

76881068194225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507284 (or 1753642 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 67.

The spelling of 76881068194225 in words is "seventy-six trillion, eight hundred eighty-one billion, sixty-eight million, one hundred ninety-four thousand, two hundred twenty-five".