1253415342251 has 4 divisors (see below), whose sum is σ = 1253417851104. Its totient is φ = 1253412833400.

The previous prime is 1253415342229. The next prime is 1253415342259. The reversal of 1253415342251 is 1522435143521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253415342251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253415342259) 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, 221540 + ... + 1598721.

It is an arithmetic number, because the mean of its divisors is an integer number (313354462776).

Almost surely, 2^{1253415342251} is an apocalyptic number.

1253415342251 is a deficient number, since it is larger than the sum of its proper divisors (2508853).

1253415342251 is an equidigital number, since it uses as much as digits as its factorization.

1253415342251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508852.

The product of its digits is 144000, while the sum is 38.

The spelling of 1253415342251 in words is "one trillion, two hundred fifty-three billion, four hundred fifteen million, three hundred forty-two thousand, two hundred fifty-one".