125778258 has 24 divisors (see below), whose sum is σ = 282613968. Its totient is φ = 41925924.

The previous prime is 125778241. The next prime is 125778269. The reversal of 125778258 is 852877521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128916 + ... + 129887.

It is an arithmetic number, because the mean of its divisors is an integer number (11775582).

Almost surely, 2^125778258 is an apocalyptic number.

125778258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

125778258 is an abundant number, since it is smaller than the sum of its proper divisors (156835710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125778258 is an equidigital number, since it uses as much as digits as its factorization.

125778258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258820 (or 258808 counting only the distinct ones).

The product of its digits is 313600, while the sum is 45.

The square root of 125778258 is about 11215.0906371728. The cubic root of 125778258 is about 501.0355312030.

The spelling of 125778258 in words is "one hundred twenty-five million, seven hundred seventy-eight thousand, two hundred fifty-eight".