77273125 has 10 divisors (see below), whose sum is σ = 96561278. Its totient is φ = 61818000.

The previous prime is 77273117. The next prime is 77273149. The reversal of 77273125 is 52137277.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 50253921 + 27019204 = 7089^2 + 5198^2 .

It is not a de Polignac number, because 77273125 - 2³ = 77273117 is a prime.

It is a super-2 number, since 2×77273125² = 11942271694531250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 61194 + ... + 62443.

Almost surely, 2^77273125 is an apocalyptic number.

It is an amenable number.

77273125 is a deficient number, since it is larger than the sum of its proper divisors (19288153).

77273125 is an equidigital number, since it uses as much as digits as its factorization.

77273125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123657 (or 123642 counting only the distinct ones).

The product of its digits is 20580, while the sum is 34.

The square root of 77273125 is about 8790.5133524727. The cubic root of 77273125 is about 425.9345065251.

The spelling of 77273125 in words is "seventy-seven million, two hundred seventy-three thousand, one hundred twenty-five".