125004720745 has 4 divisors (see below), whose sum is σ = 150005664900. Its totient is φ = 100003776592.

The previous prime is 125004720733. The next prime is 125004720769. The reversal of 125004720745 is 547027400521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547027400521 = 7 ⋅78146771503.

It can be written as a sum of positive squares in 2 ways, for example, as 94340508201 + 30664212544 = 307149^2 + 175112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125004720745 is a prime.

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, 12500472070 + ... + 12500472079.

It is an arithmetic number, because the mean of its divisors is an integer number (37501416225).

Almost surely, 2^125004720745 is an apocalyptic number.

It is an amenable number.

125004720745 is a deficient number, since it is larger than the sum of its proper divisors (25000944155).

125004720745 is an equidigital number, since it uses as much as digits as its factorization.

125004720745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000944154.

The product of its (nonzero) digits is 78400, while the sum is 37.

The spelling of 125004720745 in words is "one hundred twenty-five billion, four million, seven hundred twenty thousand, seven hundred forty-five".