1252645506655 has 8 divisors (see below), whose sum is σ = 1503312465600. Its totient is φ = 1002024500256.

The previous prime is 1252645506649. The next prime is 1252645506689. The reversal of 1252645506655 is 5566055462521.

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 1252645506655 - 2²¹ = 1252643409503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11428135 + ... + 11537224.

It is an arithmetic number, because the mean of its divisors is an integer number (187914058200).

Almost surely, 2^{1252645506655} is an apocalyptic number.

1252645506655 is a deficient number, since it is larger than the sum of its proper divisors (250666958945).

1252645506655 is a wasteful number, since it uses less digits than its factorization.

1252645506655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22976273.

The product of its (nonzero) digits is 10800000, while the sum is 52.

The spelling of 1252645506655 in words is "one trillion, two hundred fifty-two billion, six hundred forty-five million, five hundred six thousand, six hundred fifty-five".