1254405641 has 2 divisors, whose sum is σ = 1254405642. Its totient is φ = 1254405640.

The previous prime is 1254405629. The next prime is 1254405689. The reversal of 1254405641 is 1465044521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 816759241 + 437646400 = 28579^2 + 20920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254405641 - 2¹⁰ = 1254404617 is a prime.

It is a super-3 number, since 3×1254405641³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1254405598 and 1254405607.

It is not a weakly prime, because it can be changed into another prime (1254105641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627202820 + 627202821.

It is an arithmetic number, because the mean of its divisors is an integer number (627202821).

Almost surely, 2^1254405641 is an apocalyptic number.

It is an amenable number.

1254405641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254405641 is an equidigital number, since it uses as much as digits as its factorization.

1254405641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 1254405641 is about 35417.5894295476. The cubic root of 1254405641 is about 1078.4814165386.

The spelling of 1254405641 in words is "one billion, two hundred fifty-four million, four hundred five thousand, six hundred forty-one".