125132305031 has 4 divisors (see below), whose sum is σ = 125447500152. Its totient is φ = 124817109912.

The previous prime is 125132305027. The next prime is 125132305037. The reversal of 125132305031 is 130503231521.

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 125132305031 - 2² = 125132305027 is a prime.

It is a super-2 number, since 2×125132305031² (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 (125132305037) 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, 157596965 + ... + 157597758.

It is an arithmetic number, because the mean of its divisors is an integer number (31361875038).

Almost surely, 2^125132305031 is an apocalyptic number.

125132305031 is a deficient number, since it is larger than the sum of its proper divisors (315195121).

125132305031 is an equidigital number, since it uses as much as digits as its factorization.

125132305031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315195120.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 125132305031 its reverse (130503231521), we get a palindrome (255635536552).

The spelling of 125132305031 in words is "one hundred twenty-five billion, one hundred thirty-two million, three hundred five thousand, thirty-one".