1252613605401 has 24 divisors (see below), whose sum is σ = 1814943836160. Its totient is φ = 832488624000.

The previous prime is 1252613605381. The next prime is 1252613605421. The reversal of 1252613605401 is 1045063162521.

1252613605401 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 6 + 1 + 3 + 605 + 40 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1252613605381) and next prime (1252613605421).

It is not a de Polignac number, because 1252613605401 - 2⁷ = 1252613605273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1252613605421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4125601 + ... + 4418801.

It is an arithmetic number, because the mean of its divisors is an integer number (75622659840).

Almost surely, 2^{1252613605401} is an apocalyptic number.

It is an amenable number.

1252613605401 is a deficient number, since it is larger than the sum of its proper divisors (562330230759).

1252613605401 is a wasteful number, since it uses less digits than its factorization.

1252613605401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294677 (or 294674 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 1252613605401 its reverse (1045063162521), we get a palindrome (2297676767922).

The spelling of 1252613605401 in words is "one trillion, two hundred fifty-two billion, six hundred thirteen million, six hundred five thousand, four hundred one".