405502012501 has 2 divisors, whose sum is σ = 405502012502. Its totient is φ = 405502012500.

The previous prime is 405502012483. The next prime is 405502012541. The reversal of 405502012501 is 105210205504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333447347601 + 72054664900 = 577449^2 + 268430^2 .

It is a cyclic number.

It is not a de Polignac number, because 405502012501 - 2⁷ = 405502012373 is a prime.

It is a super-2 number, since 2×405502012501² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405502012541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202751006250 + 202751006251.

It is an arithmetic number, because the mean of its divisors is an integer number (202751006251).

Almost surely, 2^405502012501 is an apocalyptic number.

It is an amenable number.

405502012501 is a deficient number, since it is larger than the sum of its proper divisors (1).

405502012501 is an equidigital number, since it uses as much as digits as its factorization.

405502012501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 405502012501 in words is "four hundred five billion, five hundred two million, twelve thousand, five hundred one".