125575029479 has 4 divisors (see below), whose sum is σ = 125874731640. Its totient is φ = 125275327320.

The previous prime is 125575029469. The next prime is 125575029491. The reversal of 125575029479 is 974920575521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974920575521 = 73 ⋅13355076377.

It is a cyclic number.

It is not a de Polignac number, because 125575029479 - 2²⁴ = 125558252263 is a prime.

It is a super-2 number, since 2×125575029479² (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 (125575029469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149850452 + ... + 149851289.

It is an arithmetic number, because the mean of its divisors is an integer number (31468682910).

Almost surely, 2^125575029479 is an apocalyptic number.

125575029479 is a deficient number, since it is larger than the sum of its proper divisors (299702161).

125575029479 is an equidigital number, since it uses as much as digits as its factorization.

125575029479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299702160.

The product of its (nonzero) digits is 7938000, while the sum is 56.

The spelling of 125575029479 in words is "one hundred twenty-five billion, five hundred seventy-five million, twenty-nine thousand, four hundred seventy-nine".