125818877 has 4 divisors (see below), whose sum is σ = 125988960. Its totient is φ = 125648796.

The previous prime is 125818871. The next prime is 125818897. The reversal of 125818877 is 778818521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 778818521 = 13 ⋅59909117.

It is a cyclic number.

It is not a de Polignac number, because 125818877 - 2²⁰ = 124770301 is a prime.

It is a super-2 number, since 2×125818877² = 31660779619082258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125818871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83927 + ... + 85412.

It is an arithmetic number, because the mean of its divisors is an integer number (31497240).

Almost surely, 2^125818877 is an apocalyptic number.

It is an amenable number.

125818877 is a deficient number, since it is larger than the sum of its proper divisors (170083).

125818877 is an equidigital number, since it uses as much as digits as its factorization.

125818877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170082.

The product of its digits is 250880, while the sum is 47.

The square root of 125818877 is about 11216.9013992279. The cubic root of 125818877 is about 501.0894604278.

The spelling of 125818877 in words is "one hundred twenty-five million, eight hundred eighteen thousand, eight hundred seventy-seven".