125631945007 has 4 divisors (see below), whose sum is σ = 125784597040. Its totient is φ = 125479292976.

The previous prime is 125631944981. The next prime is 125631945031. The reversal of 125631945007 is 700549136521.

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-125631945007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125631945037) 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, 76324782 + ... + 76326427.

It is an arithmetic number, because the mean of its divisors is an integer number (31446149260).

Almost surely, 2^125631945007 is an apocalyptic number.

125631945007 is a deficient number, since it is larger than the sum of its proper divisors (152652033).

125631945007 is an equidigital number, since it uses as much as digits as its factorization.

125631945007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152652032.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 125631945007 in words is "one hundred twenty-five billion, six hundred thirty-one million, nine hundred forty-five thousand, seven".