43725249672 has 48 divisors (see below), whose sum is σ = 118368660240. Its totient is φ = 13453921728.

The previous prime is 43725249587. The next prime is 43725249697. The reversal of 43725249672 is 27694252734.

It is a happy number.

It is a super-2 number, since 2×43725249672² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5386138 + ... + 5394249.

It is an arithmetic number, because the mean of its divisors is an integer number (2466013755).

Almost surely, 2^43725249672 is an apocalyptic number.

It is an amenable number.

43725249672 is an abundant number, since it is smaller than the sum of its proper divisors (74643410568).

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

43725249672 is a wasteful number, since it uses less digits than its factorization.

43725249672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10780422 (or 10780405 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 51.

The spelling of 43725249672 in words is "forty-three billion, seven hundred twenty-five million, two hundred forty-nine thousand, six hundred seventy-two".