125293942098649 has 4 divisors (see below), whose sum is σ = 125339854135860. Its totient is φ = 125248030061440.

The previous prime is 125293942098641. The next prime is 125293942098671. The reversal of 125293942098649 is 946890249392521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 123705001175625 + 1588940923024 = 11122275^2 + 1260532^2 .

It is a cyclic number.

It is not a de Polignac number, because 125293942098649 - 2³ = 125293942098641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125293942098641) 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, 22956014512 + ... + 22956019969.

It is an arithmetic number, because the mean of its divisors is an integer number (31334963533965).

Almost surely, 2^{125293942098649} is an apocalyptic number.

It is an amenable number.

125293942098649 is a deficient number, since it is larger than the sum of its proper divisors (45912037211).

125293942098649 is an equidigital number, since it uses as much as digits as its factorization.

125293942098649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45912037210.

The product of its (nonzero) digits is 604661760, while the sum is 73.

The spelling of 125293942098649 in words is "one hundred twenty-five trillion, two hundred ninety-three billion, nine hundred forty-two million, ninety-eight thousand, six hundred forty-nine".