125844478436 has 12 divisors (see below), whose sum is σ = 220337037228. Its totient is φ = 62891039232.

The previous prime is 125844478427. The next prime is 125844478471. The reversal of 125844478436 is 634874448521.

It can be written as a sum of positive squares in 2 ways, for example, as 44673049600 + 81171428836 = 211360^2 + 284906^2 .

It is a super-3 number, since 3×125844478436³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7790921 + ... + 7807056.

It is an arithmetic number, because the mean of its divisors is an integer number (18361419769).

Almost surely, 2^125844478436 is an apocalyptic number.

It is an amenable number.

125844478436 is a deficient number, since it is larger than the sum of its proper divisors (94492558792).

125844478436 is a wasteful number, since it uses less digits than its factorization.

125844478436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15599998 (or 15599996 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 56.

The spelling of 125844478436 in words is "one hundred twenty-five billion, eight hundred forty-four million, four hundred seventy-eight thousand, four hundred thirty-six".