77134125 has 32 divisors (see below), whose sum is σ = 129662208. Its totient is φ = 40718400.

The previous prime is 77134121. The next prime is 77134147. The reversal of 77134125 is 52143177.

It is not a de Polignac number, because 77134125 - 2² = 77134121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77134092 and 77134101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77134121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37627 + ... + 39623.

It is an arithmetic number, because the mean of its divisors is an integer number (4051944).

Almost surely, 2^77134125 is an apocalyptic number.

77134125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77134125 is a deficient number, since it is larger than the sum of its proper divisors (52528083).

77134125 is a wasteful number, since it uses less digits than its factorization.

77134125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118 (or 2108 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 77134125 is about 8782.6035433691. The cubic root of 77134125 is about 425.6789608811.

The spelling of 77134125 in words is "seventy-seven million, one hundred thirty-four thousand, one hundred twenty-five".