125338609049 has 4 divisors (see below), whose sum is σ = 125669318160. Its totient is φ = 125007899940.

The previous prime is 125338609037. The next prime is 125338609057. The reversal of 125338609049 is 940906833521.

It is a happy number.

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 not a de Polignac number, because 125338609049 - 2¹² = 125338604953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125338608988 and 125338609006.

It is not an unprimeable number, because it can be changed into a prime (125338609079) 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, 165353987 + ... + 165354744.

It is an arithmetic number, because the mean of its divisors is an integer number (31417329540).

Almost surely, 2^125338609049 is an apocalyptic number.

It is an amenable number.

125338609049 is a deficient number, since it is larger than the sum of its proper divisors (330709111).

125338609049 is an equidigital number, since it uses as much as digits as its factorization.

125338609049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330709110.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 125338609049 in words is "one hundred twenty-five billion, three hundred thirty-eight million, six hundred nine thousand, forty-nine".