125236315077 has 4 divisors (see below), whose sum is σ = 166981753440. Its totient is φ = 83490876716.

The previous prime is 125236315033. The next prime is 125236315121. The reversal of 125236315077 is 770513632521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 770513632521 = 3 ⋅256837877507.

It is an interprime number because it is at equal distance from previous prime (125236315033) and next prime (125236315121).

It is a cyclic number.

It is not a de Polignac number, because 125236315077 - 2¹⁵ = 125236282309 is a prime.

It is a super-2 number, since 2×125236315077² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125236316077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20872719177 + ... + 20872719182.

It is an arithmetic number, because the mean of its divisors is an integer number (41745438360).

Almost surely, 2^125236315077 is an apocalyptic number.

It is an amenable number.

125236315077 is a deficient number, since it is larger than the sum of its proper divisors (41745438363).

125236315077 is an equidigital number, since it uses as much as digits as its factorization.

125236315077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41745438362.

The product of its (nonzero) digits is 264600, while the sum is 42.

Adding to 125236315077 its reverse (770513632521), we get a palindrome (895749947598).

The spelling of 125236315077 in words is "one hundred twenty-five billion, two hundred thirty-six million, three hundred fifteen thousand, seventy-seven".