125531554145 has 8 divisors (see below), whose sum is σ = 150639913320. Its totient is φ = 100423877760.

The previous prime is 125531554133. The next prime is 125531554171. The reversal of 125531554145 is 541455135521.

It can be written as a sum of positive squares in 4 ways, for example, as 397444096 + 125134110049 = 19936^2 + 353743^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125531554145 - 2³⁰ = 124457812321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418955 + ... + 653135.

It is an arithmetic number, because the mean of its divisors is an integer number (18829989165).

Almost surely, 2^125531554145 is an apocalyptic number.

It is an amenable number.

125531554145 is a deficient number, since it is larger than the sum of its proper divisors (25108359175).

125531554145 is a wasteful number, since it uses less digits than its factorization.

125531554145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341395.

The product of its digits is 300000, while the sum is 41.

Adding to 125531554145 its reverse (541455135521), we get a palindrome (666986689666).

The spelling of 125531554145 in words is "one hundred twenty-five billion, five hundred thirty-one million, five hundred fifty-four thousand, one hundred forty-five".