1252065106551 has 8 divisors (see below), whose sum is σ = 1907908733824. Its totient is φ = 715465775160.

The previous prime is 1252065106547. The next prime is 1252065106559. The reversal of 1252065106551 is 1556015602521.

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

It is not a de Polignac number, because 1252065106551 - 2² = 1252065106547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252065106559) 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, 29811073945 + ... + 29811073986.

It is an arithmetic number, because the mean of its divisors is an integer number (238488591728).

Almost surely, 2^{1252065106551} is an apocalyptic number.

1252065106551 is a deficient number, since it is larger than the sum of its proper divisors (655843627273).

1252065106551 is an equidigital number, since it uses as much as digits as its factorization.

1252065106551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59622147941.

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 1252065106551 in words is "one trillion, two hundred fifty-two billion, sixty-five million, one hundred six thousand, five hundred fifty-one".