125015131044 has 18 divisors (see below), whose sum is σ = 316010470230. Its totient is φ = 41671710336.

The previous prime is 125015131037. The next prime is 125015131057. The reversal of 125015131044 is 440131510521.

125015131044 is a `hidden beast` number, since 1 + 2 + 501 + 51 + 3 + 104 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 64572908544 + 60442222500 = 254112^2 + 245850^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 125015130999 and 125015131017.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1736321229 + ... + 1736321300.

It is an arithmetic number, because the mean of its divisors is an integer number (17556137235).

Almost surely, 2^125015131044 is an apocalyptic number.

It is an amenable number.

125015131044 is an abundant number, since it is smaller than the sum of its proper divisors (190995339186).

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

125015131044 is a wasteful number, since it uses less digits than its factorization.

125015131044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472642539 (or 3472642534 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 125015131044 its reverse (440131510521), we get a palindrome (565146641565).

The spelling of 125015131044 in words is "one hundred twenty-five billion, fifteen million, one hundred thirty-one thousand, forty-four".