125400366 has 128 divisors (see below), whose sum is σ = 347289600. Its totient is φ = 32853600.

The previous prime is 125400269. The next prime is 125400389. The reversal of 125400366 is 663004521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 830391 + ... + 830541.

It is an arithmetic number, because the mean of its divisors is an integer number (2713200).

Almost surely, 2^125400366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125400366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173644800).

125400366 is an abundant number, since it is smaller than the sum of its proper divisors (221889234).

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

125400366 is a wasteful number, since it uses less digits than its factorization.

125400366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 125400366 is about 11198.2304852151. The cubic root of 125400366 is about 500.5332524149.

Adding to 125400366 its reverse (663004521), we get a palindrome (788404887).

The spelling of 125400366 in words is "one hundred twenty-five million, four hundred thousand, three hundred sixty-six".