1250000225 has 24 divisors (see below), whose sum is σ = 1643118048. Its totient is φ = 940064000.

The previous prime is 1250000221. The next prime is 1250000231. The reversal of 1250000225 is 5220000521.

It is not a de Polignac number, because 1250000225 - 2² = 1250000221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

1250000225 is a modest number, since divided by 225 gives 125 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1250000221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 615662 + ... + 617688.

It is an arithmetic number, because the mean of its divisors is an integer number (68463252).

Almost surely, 2^1250000225 is an apocalyptic number.

It is an amenable number.

1250000225 is a deficient number, since it is larger than the sum of its proper divisors (393117823).

1250000225 is a wasteful number, since it uses less digits than its factorization.

1250000225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505 (or 3500 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1250000225 is about 35355.3422413077. The cubic root of 1250000225 is about 1077.2174096490.

Adding to 1250000225 its reverse (5220000521), we get a palindrome (6470000746).

The spelling of 1250000225 in words is "one billion, two hundred fifty million, two hundred twenty-five", and thus it is an aban number.