125391829 has 4 divisors (see below), whose sum is σ = 125462880. Its totient is φ = 125320780.

The previous prime is 125391821. The next prime is 125391841. The reversal of 125391829 is 928193521.

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 125391829 - 2³ = 125391821 is a prime.

It is a super-2 number, since 2×125391829² = 31446221559930482, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125391791 and 125391800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125391821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32809 + ... + 36430.

It is an arithmetic number, because the mean of its divisors is an integer number (31365720).

Almost surely, 2^125391829 is an apocalyptic number.

It is an amenable number.

125391829 is a deficient number, since it is larger than the sum of its proper divisors (71051).

125391829 is an equidigital number, since it uses as much as digits as its factorization.

125391829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71050.

The product of its digits is 38880, while the sum is 40.

The square root of 125391829 is about 11197.8493024330. The cubic root of 125391829 is about 500.5218937310.

The spelling of 125391829 in words is "one hundred twenty-five million, three hundred ninety-one thousand, eight hundred twenty-nine".