254608377509 has 2 divisors, whose sum is σ = 254608377510. Its totient is φ = 254608377508.

The previous prime is 254608377431. The next prime is 254608377533. The reversal of 254608377509 is 905773806452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242085648484 + 12522729025 = 492022^2 + 111905^2 .

It is a cyclic number.

It is not a de Polignac number, because 254608377509 - 2²⁴ = 254591600293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254608377599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127304188754 + 127304188755.

It is an arithmetic number, because the mean of its divisors is an integer number (127304188755).

Almost surely, 2^254608377509 is an apocalyptic number.

It is an amenable number.

254608377509 is a deficient number, since it is larger than the sum of its proper divisors (1).

254608377509 is an equidigital number, since it uses as much as digits as its factorization.

254608377509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 254608377509 in words is "two hundred fifty-four billion, six hundred eight million, three hundred seventy-seven thousand, five hundred nine".