125555341231 has 4 divisors (see below), whose sum is σ = 125558105832. Its totient is φ = 125552576632.

The previous prime is 125555341201. The next prime is 125555341273. The reversal of 125555341231 is 132143555521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125555341231 - 2⁷ = 125555341103 is a prime.

It is a super-2 number, since 2×125555341231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125555341201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1313020 + ... + 1405393.

It is an arithmetic number, because the mean of its divisors is an integer number (31389526458).

Almost surely, 2^125555341231 is an apocalyptic number.

125555341231 is a deficient number, since it is larger than the sum of its proper divisors (2764601).

125555341231 is an equidigital number, since it uses as much as digits as its factorization.

125555341231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764600.

The product of its digits is 90000, while the sum is 37.

Adding to 125555341231 its reverse (132143555521), we get a palindrome (257698896752).

The spelling of 125555341231 in words is "one hundred twenty-five billion, five hundred fifty-five million, three hundred forty-one thousand, two hundred thirty-one".