125535443361 has 32 divisors (see below), whose sum is σ = 176477491200. Its totient is φ = 79269416640.

The previous prime is 125535443347. The next prime is 125535443393. The reversal of 125535443361 is 163344535521.

It is a happy number.

It is not a de Polignac number, because 125535443361 - 2⁵ = 125535443329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125535443261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1206570 + ... + 1306476.

It is an arithmetic number, because the mean of its divisors is an integer number (5514921600).

Almost surely, 2^125535443361 is an apocalyptic number.

It is an amenable number.

125535443361 is a deficient number, since it is larger than the sum of its proper divisors (50942047839).

125535443361 is a wasteful number, since it uses less digits than its factorization.

125535443361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100229.

The product of its digits is 648000, while the sum is 42.

Adding to 125535443361 its reverse (163344535521), we get a palindrome (288879978882).

The spelling of 125535443361 in words is "one hundred twenty-five billion, five hundred thirty-five million, four hundred forty-three thousand, three hundred sixty-one".