1253751550289 has 4 divisors (see below), whose sum is σ = 1432858914624. Its totient is φ = 1074644185956.

The previous prime is 1253751550273. The next prime is 1253751550313. The reversal of 1253751550289 is 9820551573521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1253751550289 - 2⁴ = 1253751550273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1253751550289.

It is not an unprimeable number, because it can be changed into a prime (1253750550289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89553682157 + ... + 89553682170.

It is an arithmetic number, because the mean of its divisors is an integer number (358214728656).

Almost surely, 2^{1253751550289} is an apocalyptic number.

It is an amenable number.

1253751550289 is a deficient number, since it is larger than the sum of its proper divisors (179107364335).

1253751550289 is an equidigital number, since it uses as much as digits as its factorization.

1253751550289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179107364334.

The product of its (nonzero) digits is 3780000, while the sum is 53.

The spelling of 1253751550289 in words is "one trillion, two hundred fifty-three billion, seven hundred fifty-one million, five hundred fifty thousand, two hundred eighty-nine".