1253025507857 has 8 divisors (see below), whose sum is σ = 1296314412840. Its totient is φ = 1209742011520.

The previous prime is 1253025507823. The next prime is 1253025507859. The reversal of 1253025507857 is 7587055203521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7928833936 + 1245096673921 = 89044^2 + 1115839^2 .

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 1253025507857 - 2³⁰ = 1251951766033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253025507859) 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, 877994 + ... + 1810227.

It is an arithmetic number, because the mean of its divisors is an integer number (162039301605).

Almost surely, 2^{1253025507857} is an apocalyptic number.

It is an amenable number.

1253025507857 is a deficient number, since it is larger than the sum of its proper divisors (43288904983).

1253025507857 is a wasteful number, since it uses less digits than its factorization.

1253025507857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704323.

The product of its (nonzero) digits is 2940000, while the sum is 50.

The spelling of 1253025507857 in words is "one trillion, two hundred fifty-three billion, twenty-five million, five hundred seven thousand, eight hundred fifty-seven".