254136425677 has 2 divisors, whose sum is σ = 254136425678. Its totient is φ = 254136425676.

The previous prime is 254136425659. The next prime is 254136425771. The reversal of 254136425677 is 776524631452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150281050921 + 103855374756 = 387661^2 + 322266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254136425677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254136425617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127068212838 + 127068212839.

It is an arithmetic number, because the mean of its divisors is an integer number (127068212839).

Almost surely, 2^254136425677 is an apocalyptic number.

It is an amenable number.

254136425677 is a deficient number, since it is larger than the sum of its proper divisors (1).

254136425677 is an equidigital number, since it uses as much as digits as its factorization.

254136425677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8467200, while the sum is 52.

The spelling of 254136425677 in words is "two hundred fifty-four billion, one hundred thirty-six million, four hundred twenty-five thousand, six hundred seventy-seven".