125625020881537 has 4 divisors (see below), whose sum is σ = 125625046117680. Its totient is φ = 125624995645396.

The previous prime is 125625020881523. The next prime is 125625020881541. The reversal of 125625020881537 is 735188020526521.

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 a de Polignac number, because none of the positive numbers 2^k-125625020881537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125625023881537) 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, 2384587 + ... + 16029232.

It is an arithmetic number, because the mean of its divisors is an integer number (31406261529420).

Almost surely, 2^{125625020881537} is an apocalyptic number.

It is an amenable number.

125625020881537 is a deficient number, since it is larger than the sum of its proper divisors (25236143).

125625020881537 is an equidigital number, since it uses as much as digits as its factorization.

125625020881537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25236142.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 125625020881537 in words is "one hundred twenty-five trillion, six hundred twenty-five billion, twenty million, eight hundred eighty-one thousand, five hundred thirty-seven".