254402145220501 has 2 divisors, whose sum is σ = 254402145220502. Its totient is φ = 254402145220500.

The previous prime is 254402145220493. The next prime is 254402145220523. The reversal of 254402145220501 is 105022541204452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202801125162276 + 51601020058225 = 14240826^2 + 7183385^2 .

It is a cyclic number.

It is not a de Polignac number, because 254402145220501 - 2³ = 254402145220493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254402145224501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127201072610250 + 127201072610251.

It is an arithmetic number, because the mean of its divisors is an integer number (127201072610251).

Almost surely, 2^{254402145220501} is an apocalyptic number.

It is an amenable number.

254402145220501 is a deficient number, since it is larger than the sum of its proper divisors (1).

254402145220501 is an equidigital number, since it uses as much as digits as its factorization.

254402145220501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128000, while the sum is 37.

Adding to 254402145220501 its reverse (105022541204452), we get a palindrome (359424686424953).

The spelling of 254402145220501 in words is "two hundred fifty-four trillion, four hundred two billion, one hundred forty-five million, two hundred twenty thousand, five hundred one".