125240671771 has 4 divisors (see below), whose sum is σ = 128295322344. Its totient is φ = 122186021200.

The previous prime is 125240671727. The next prime is 125240671781. The reversal of 125240671771 is 177176042521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125240671771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125240671711) 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, 1527325225 + ... + 1527325306.

It is an arithmetic number, because the mean of its divisors is an integer number (32073830586).

Almost surely, 2^125240671771 is an apocalyptic number.

125240671771 is a deficient number, since it is larger than the sum of its proper divisors (3054650573).

125240671771 is an equidigital number, since it uses as much as digits as its factorization.

125240671771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054650572.

The product of its (nonzero) digits is 164640, while the sum is 43.

The spelling of 125240671771 in words is "one hundred twenty-five billion, two hundred forty million, six hundred seventy-one thousand, seven hundred seventy-one".