77416225 has 12 divisors (see below), whose sum is σ = 99307260. Its totient is φ = 59796800.

The previous prime is 77416219. The next prime is 77416231. The reversal of 77416225 is 52261477.

It is an interprime number because it is at equal distance from previous prime (77416219) and next prime (77416231).

It can be written as a sum of positive squares in 6 ways, for example, as 1934881 + 75481344 = 1391^2 + 8688^2 .

It is not a de Polignac number, because 77416225 - 2⁵ = 77416193 is a prime.

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, 52666 + ... + 54115.

It is an arithmetic number, because the mean of its divisors is an integer number (8275605).

Almost surely, 2^77416225 is an apocalyptic number.

It is an amenable number.

77416225 is a deficient number, since it is larger than the sum of its proper divisors (21891035).

77416225 is a wasteful number, since it uses less digits than its factorization.

77416225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106820 (or 106815 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 77416225 is about 8798.6490440294. The cubic root of 77416225 is about 426.1972699024.

The spelling of 77416225 in words is "seventy-seven million, four hundred sixteen thousand, two hundred twenty-five".