125110136661 has 4 divisors (see below), whose sum is σ = 166813515552. Its totient is φ = 83406757772.

The previous prime is 125110136609. The next prime is 125110136677. The reversal of 125110136661 is 166631011521.

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.

It is a cyclic number.

It is not a de Polignac number, because 125110136661 - 2⁷ = 125110136533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125110136681) 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, 20851689441 + ... + 20851689446.

It is an arithmetic number, because the mean of its divisors is an integer number (41703378888).

Almost surely, 2^125110136661 is an apocalyptic number.

It is an amenable number.

125110136661 is a deficient number, since it is larger than the sum of its proper divisors (41703378891).

125110136661 is an equidigital number, since it uses as much as digits as its factorization.

125110136661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41703378890.

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 125110136661 in words is "one hundred twenty-five billion, one hundred ten million, one hundred thirty-six thousand, six hundred sixty-one".