125405234 has 4 divisors (see below), whose sum is σ = 188107854. Its totient is φ = 62702616.

The previous prime is 125405233. The next prime is 125405237. The reversal of 125405234 is 432504521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 76615009 + 48790225 = 8753^2 + 6985^2 .

It is not an unprimeable number, because it can be changed into a prime (125405233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31351307 + ... + 31351310.

Almost surely, 2^125405234 is an apocalyptic number.

125405234 is a deficient number, since it is larger than the sum of its proper divisors (62702620).

125405234 is an equidigital number, since it uses as much as digits as its factorization.

125405234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62702619.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 125405234 is about 11198.4478388748. The cubic root of 125405234 is about 500.5397291752.

Adding to 125405234 its reverse (432504521), we get a palindrome (557909755).

The spelling of 125405234 in words is "one hundred twenty-five million, four hundred five thousand, two hundred thirty-four".