1251052155223 has 8 divisors (see below), whose sum is σ = 1347324540800. Its totient is φ = 1154785141728.

The previous prime is 1251052155193. The next prime is 1251052155259. The reversal of 1251052155223 is 3225512501521.

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 1251052155223 - 2⁵ = 1251052155191 is a prime.

It is a super-2 number, since 2×1251052155223² (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 (1251052155523) 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, 852708 + ... + 1797001.

It is an arithmetic number, because the mean of its divisors is an integer number (168415567600).

Almost surely, 2^{1251052155223} is an apocalyptic number.

1251052155223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1251052155223 is a deficient number, since it is larger than the sum of its proper divisors (96272385577).

1251052155223 is a wasteful number, since it uses less digits than its factorization.

1251052155223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686041.

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 1251052155223 its reverse (3225512501521), we get a palindrome (4476564656744).

The spelling of 1251052155223 in words is "one trillion, two hundred fifty-one billion, fifty-two million, one hundred fifty-five thousand, two hundred twenty-three".