125221604 has 6 divisors (see below), whose sum is σ = 219137814. Its totient is φ = 62610800.

The previous prime is 125221601. The next prime is 125221631. The reversal of 125221604 is 406122521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 96040000 + 29181604 = 9800^2 + 5402^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 125221604.

It is not an unprimeable number, because it can be changed into a prime (125221601) 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, 15652697 + ... + 15652704.

It is an arithmetic number, because the mean of its divisors is an integer number (36522969).

Almost surely, 2^125221604 is an apocalyptic number.

It is an amenable number.

125221604 is a deficient number, since it is larger than the sum of its proper divisors (93916210).

125221604 is a wasteful number, since it uses less digits than its factorization.

125221604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31305405 (or 31305403 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 125221604 is about 11190.2459311670. The cubic root of 125221604 is about 500.2952975644.

The spelling of 125221604 in words is "one hundred twenty-five million, two hundred twenty-one thousand, six hundred four".