1252344251405 has 8 divisors (see below), whose sum is σ = 1618414109592. Its totient is φ = 924808062528.

The previous prime is 1252344251401. The next prime is 1252344251413. The reversal of 1252344251405 is 5041524432521.

It can be written as a sum of positive squares in 4 ways, for example, as 250819670761 + 1001524580644 = 500819^2 + 1000762^2 .

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 1252344251405 - 2² = 1252344251401 is a prime.

It is a super-2 number, since 2×1252344251405² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252344251401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9633417254 + ... + 9633417383.

It is an arithmetic number, because the mean of its divisors is an integer number (202301763699).

Almost surely, 2^{1252344251405} is an apocalyptic number.

It is an amenable number.

1252344251405 is a deficient number, since it is larger than the sum of its proper divisors (366069858187).

1252344251405 is a wasteful number, since it uses less digits than its factorization.

1252344251405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19266834655.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 1252344251405 its reverse (5041524432521), we get a palindrome (6293868683926).

The spelling of 1252344251405 in words is "one trillion, two hundred fifty-two billion, three hundred forty-four million, two hundred fifty-one thousand, four hundred five".