125228778 has 16 divisors (see below), whose sum is σ = 258537216. Its totient is φ = 40396320.

The previous prime is 125228777. The next prime is 125228797. The reversal of 125228778 is 877822521.

It is not an unprimeable number, because it can be changed into a prime (125228773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336451 + ... + 336822.

It is an arithmetic number, because the mean of its divisors is an integer number (16158576).

Almost surely, 2^125228778 is an apocalyptic number.

125228778 is an abundant number, since it is smaller than the sum of its proper divisors (133308438).

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

125228778 is a wasteful number, since it uses less digits than its factorization.

125228778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673309.

The product of its digits is 125440, while the sum is 42.

The square root of 125228778 is about 11190.5664735973. The cubic root of 125228778 is about 500.3048514268.

The spelling of 125228778 in words is "one hundred twenty-five million, two hundred twenty-eight thousand, seven hundred seventy-eight".