1252204505401 has 8 divisors (see below), whose sum is σ = 1325874630600. Its totient is φ = 1178535606528.

The previous prime is 1252204505369. The next prime is 1252204505411. The reversal of 1252204505401 is 1045054022521.

It can be written as a sum of positive squares in 4 ways, for example, as 236696845225 + 1015507660176 = 486515^2 + 1007724^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252204505401 - 2⁵ = 1252204505369 is a prime.

It is a super-2 number, since 2×1252204505401² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252204505411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2563375 + ... + 3012523.

It is an arithmetic number, because the mean of its divisors is an integer number (165734328825).

Almost surely, 2^{1252204505401} is an apocalyptic number.

It is an amenable number.

1252204505401 is a deficient number, since it is larger than the sum of its proper divisors (73670125199).

1252204505401 is a wasteful number, since it uses less digits than its factorization.

1252204505401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613163.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 1252204505401 its reverse (1045054022521), we get a palindrome (2297258527922).

The spelling of 1252204505401 in words is "one trillion, two hundred fifty-two billion, two hundred four million, five hundred five thousand, four hundred one".