125461129 has 4 divisors (see below), whose sum is σ = 126303300. Its totient is φ = 124618960.

The previous prime is 125461121. The next prime is 125461151. The reversal of 125461129 is 921164521.

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 69555600 + 55905529 = 8340^2 + 7477^2 .

It is a cyclic number.

It is not a de Polignac number, because 125461129 - 2³ = 125461121 is a prime.

It is a Smith number, since the sum of its digits (31) 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 self number, because there is not a number n which added to its sum of digits gives 125461129.

It is not an unprimeable number, because it can be changed into a prime (125461121) 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, 420862 + ... + 421159.

It is an arithmetic number, because the mean of its divisors is an integer number (31575825).

Almost surely, 2^125461129 is an apocalyptic number.

It is an amenable number.

125461129 is a deficient number, since it is larger than the sum of its proper divisors (842171).

125461129 is an equidigital number, since it uses as much as digits as its factorization.

125461129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842170.

The product of its digits is 4320, while the sum is 31.

The square root of 125461129 is about 11200.9432192115. The cubic root of 125461129 is about 500.6140841592.

The spelling of 125461129 in words is "one hundred twenty-five million, four hundred sixty-one thousand, one hundred twenty-nine".