125623634 has 4 divisors (see below), whose sum is σ = 188435454. Its totient is φ = 62811816.

The previous prime is 125623607. The next prime is 125623639. The reversal of 125623634 is 436326521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436326521 = 47 ⋅9283543.

It can be written as a sum of positive squares in only one way, i.e., 85618009 + 40005625 = 9253^2 + 6325^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 125623634.

It is not an unprimeable number, because it can be changed into a prime (125623639) 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 as a sum of consecutive naturals, namely, 31405907 + ... + 31405910.

Almost surely, 2^125623634 is an apocalyptic number.

125623634 is a deficient number, since it is larger than the sum of its proper divisors (62811820).

125623634 is an equidigital number, since it uses as much as digits as its factorization.

125623634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62811819.

The product of its digits is 25920, while the sum is 32.

The square root of 125623634 is about 11208.1949483403. The cubic root of 125623634 is about 500.8301329957.

The spelling of 125623634 in words is "one hundred twenty-five million, six hundred twenty-three thousand, six hundred thirty-four".