11725447172 has 24 divisors (see below), whose sum is σ = 20823077856. Its totient is φ = 5776170048.

The previous prime is 11725447171. The next prime is 11725447177. The reversal of 11725447172 is 27174452711.

It is a super-2 number, since 2×11725447172² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11725447171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255323 + ... + 297725.

It is an arithmetic number, because the mean of its divisors is an integer number (867628244).

Almost surely, 2^11725447172 is an apocalyptic number.

It is an amenable number.

11725447172 is a deficient number, since it is larger than the sum of its proper divisors (9097630684).

11725447172 is a wasteful number, since it uses less digits than its factorization.

11725447172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43427 (or 43425 counting only the distinct ones).

The product of its digits is 109760, while the sum is 41.

Adding to 11725447172 its reverse (27174452711), we get a palindrome (38899899883).

The spelling of 11725447172 in words is "eleven billion, seven hundred twenty-five million, four hundred forty-seven thousand, one hundred seventy-two".