125551254331 has 4 divisors (see below), whose sum is σ = 125571514000. Its totient is φ = 125530994664.

The previous prime is 125551254293. The next prime is 125551254341. The reversal of 125551254331 is 133452155521.

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 125551254331 - 2²¹ = 125549157179 is a prime.

It is a super-2 number, since 2×125551254331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125551254341) 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, 10120536 + ... + 10132933.

It is an arithmetic number, because the mean of its divisors is an integer number (31392878500).

Almost surely, 2^125551254331 is an apocalyptic number.

125551254331 is a deficient number, since it is larger than the sum of its proper divisors (20259669).

125551254331 is an equidigital number, since it uses as much as digits as its factorization.

125551254331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20259668.

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

The spelling of 125551254331 in words is "one hundred twenty-five billion, five hundred fifty-one million, two hundred fifty-four thousand, three hundred thirty-one".