1241289425 has 18 divisors (see below), whose sum is σ = 1630694178. Its totient is φ = 934071040.

The previous prime is 1241289421. The next prime is 1241289443. The reversal of 1241289425 is 5249821421.

It can be written as a sum of positive squares in 9 ways, for example, as 544382224 + 696907201 = 23332^2 + 26399^2 .

It is not a de Polignac number, because 1241289425 - 2² = 1241289421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241289421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 725471 + ... + 727179.

It is an arithmetic number, because the mean of its divisors is an integer number (90594121).

Almost surely, 2^1241289425 is an apocalyptic number.

It is an amenable number.

1241289425 is a deficient number, since it is larger than the sum of its proper divisors (389404753).

1241289425 is an frugal number, since it uses more digits than its factorization.

1241289425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3445 (or 1731 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 1241289425 is about 35231.9375709029. The cubic root of 1241289425 is about 1074.7093282983.

The spelling of 1241289425 in words is "one billion, two hundred forty-one million, two hundred eighty-nine thousand, four hundred twenty-five".