125433621361 has 12 divisors (see below), whose sum is σ = 127612595712. Its totient is φ = 123289123464.

The previous prime is 125433621277. The next prime is 125433621367. The reversal of 125433621361 is 163126334521.

It is not a de Polignac number, because 125433621361 - 2⁷ = 125433621233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125433621361.

It is not an unprimeable number, because it can be changed into a prime (125433621367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1346680 + ... + 1436806.

It is an arithmetic number, because the mean of its divisors is an integer number (10634382976).

Almost surely, 2^125433621361 is an apocalyptic number.

It is an amenable number.

125433621361 is a deficient number, since it is larger than the sum of its proper divisors (2178974351).

125433621361 is an frugal number, since it uses more digits than its factorization.

125433621361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90508 (or 90429 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

Adding to 125433621361 its reverse (163126334521), we get a palindrome (288559955882).

The spelling of 125433621361 in words is "one hundred twenty-five billion, four hundred thirty-three million, six hundred twenty-one thousand, three hundred sixty-one".