125146405 has 4 divisors (see below), whose sum is σ = 150175692. Its totient is φ = 100117120.

The previous prime is 125146363. The next prime is 125146457. The reversal of 125146405 is 504641521.

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 82609921 + 42536484 = 9089^2 + 6522^2 .

It is not a de Polignac number, because 125146405 - 2⁷ = 125146277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12514636 + ... + 12514645.

It is an arithmetic number, because the mean of its divisors is an integer number (37543923).

Almost surely, 2^125146405 is an apocalyptic number.

It is an amenable number.

125146405 is a deficient number, since it is larger than the sum of its proper divisors (25029287).

125146405 is an equidigital number, since it uses as much as digits as its factorization.

125146405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25029286.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 125146405 is about 11186.8854021126. The cubic root of 125146405 is about 500.1951305049.

Adding to 125146405 its reverse (504641521), we get a palindrome (629787926).

The spelling of 125146405 in words is "one hundred twenty-five million, one hundred forty-six thousand, four hundred five".