1125000621 has 24 divisors (see below), whose sum is σ = 1723619040. Its totient is φ = 705088800.

The previous prime is 1125000607. The next prime is 1125000623. The reversal of 1125000621 is 1260005211.

It is not a de Polignac number, because 1125000621 - 2⁵ = 1125000589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1125000594 and 1125000603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125000623) 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, 2710 + ... + 47511.

It is an arithmetic number, because the mean of its divisors is an integer number (71817460).

Almost surely, 2^1125000621 is an apocalyptic number.

It is an amenable number.

1125000621 is a deficient number, since it is larger than the sum of its proper divisors (598618419).

1125000621 is a wasteful number, since it uses less digits than its factorization.

1125000621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50377 (or 50374 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1125000621 is about 33541.0289198170. The cubic root of 1125000621 is about 1040.0421028936.

Adding to 1125000621 its reverse (1260005211), we get a palindrome (2385005832).

The spelling of 1125000621 in words is "one billion, one hundred twenty-five million, six hundred twenty-one", and thus it is an aban number.