125216061895 has 4 divisors (see below), whose sum is σ = 150259274280. Its totient is φ = 100172849512.

The previous prime is 125216061871. The next prime is 125216061899. The reversal of 125216061895 is 598160612521.

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

It is a cyclic number.

It is not a de Polignac number, because 125216061895 - 2³⁵ = 90856323527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125216061899) 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, 12521606185 + ... + 12521606194.

It is an arithmetic number, because the mean of its divisors is an integer number (37564818570).

Almost surely, 2^125216061895 is an apocalyptic number.

125216061895 is a deficient number, since it is larger than the sum of its proper divisors (25043212385).

125216061895 is an equidigital number, since it uses as much as digits as its factorization.

125216061895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25043212384.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 125216061895 in words is "one hundred twenty-five billion, two hundred sixteen million, sixty-one thousand, eight hundred ninety-five".