125040605815 has 4 divisors (see below), whose sum is σ = 150048726984. Its totient is φ = 100032484648.

The previous prime is 125040605779. The next prime is 125040605827. The reversal of 125040605815 is 518506040521.

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-125040605815 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12504060577 + ... + 12504060586.

It is an arithmetic number, because the mean of its divisors is an integer number (37512181746).

Almost surely, 2^125040605815 is an apocalyptic number.

125040605815 is a deficient number, since it is larger than the sum of its proper divisors (25008121169).

125040605815 is an equidigital number, since it uses as much as digits as its factorization.

125040605815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25008121168.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 125040605815 in words is "one hundred twenty-five billion, forty million, six hundred five thousand, eight hundred fifteen".