125520660611 has 4 divisors (see below), whose sum is σ = 125529320400. Its totient is φ = 125512000824.

The previous prime is 125520660599. The next prime is 125520660623. The reversal of 125520660611 is 116066025521.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (125520660599) and next prime (125520660623).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125520660611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125520660211) 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, 4308116 + ... + 4337153.

It is an arithmetic number, because the mean of its divisors is an integer number (31382330100).

Almost surely, 2^125520660611 is an apocalyptic number.

125520660611 is a deficient number, since it is larger than the sum of its proper divisors (8659789).

125520660611 is an equidigital number, since it uses as much as digits as its factorization.

125520660611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8659788.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 125520660611 in words is "one hundred twenty-five billion, five hundred twenty million, six hundred sixty thousand, six hundred eleven".