125257192789 has 8 divisors (see below), whose sum is σ = 132425444000. Its totient is φ = 118146518352.

The previous prime is 125257192763. The next prime is 125257192793. The reversal of 125257192789 is 987291752521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125257192789 - 2⁵ = 125257192757 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 (125257192759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14389719 + ... + 14398420.

It is an arithmetic number, because the mean of its divisors is an integer number (16553180500).

Almost surely, 2^125257192789 is an apocalyptic number.

125257192789 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

125257192789 is a deficient number, since it is larger than the sum of its proper divisors (7168251211).

125257192789 is a wasteful number, since it uses less digits than its factorization.

125257192789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28788387.

The product of its digits is 6350400, while the sum is 58.

The spelling of 125257192789 in words is "one hundred twenty-five billion, two hundred fifty-seven million, one hundred ninety-two thousand, seven hundred eighty-nine".