125432778 has 16 divisors (see below), whose sum is σ = 251040960. Its totient is φ = 41781696.

The previous prime is 125432767. The next prime is 125432833. The reversal of 125432778 is 877234521.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3138 + ... + 16146.

It is an arithmetic number, because the mean of its divisors is an integer number (15690060).

Almost surely, 2^125432778 is an apocalyptic number.

125432778 is an abundant number, since it is smaller than the sum of its proper divisors (125608182).

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

125432778 is a wasteful number, since it uses less digits than its factorization.

125432778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14621.

The product of its digits is 94080, while the sum is 39.

The square root of 125432778 is about 11199.6775846450. The cubic root of 125432778 is about 500.5763726671.

The spelling of 125432778 in words is "one hundred twenty-five million, four hundred thirty-two thousand, seven hundred seventy-eight".