125669394 has 72 divisors (see below), whose sum is σ = 289207308. Its totient is φ = 40940640.

The previous prime is 125669377. The next prime is 125669419. The reversal of 125669394 is 493966521.

125669394 is a `hidden beast` number, since 1 + 256 + 6 + 9 + 394 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 105822369 + 19847025 = 10287^2 + 4455^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 800364 + ... + 800520.

Almost surely, 2^125669394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125669394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144603654).

125669394 is an abundant number, since it is smaller than the sum of its proper divisors (163537914).

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

125669394 is an frugal number, since it uses more digits than its factorization.

125669394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 223 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 125669394 is about 11210.2361259699. The cubic root of 125669394 is about 500.8909368534.

The spelling of 125669394 in words is "one hundred twenty-five million, six hundred sixty-nine thousand, three hundred ninety-four".