1025305315251 has 32 divisors (see below), whose sum is σ = 1603060850688. Its totient is φ = 570703946400.

The previous prime is 1025305315207. The next prime is 1025305315289. The reversal of 1025305315251 is 1525135035201.

It is a happy number.

It is not a de Polignac number, because 1025305315251 - 2⁷ = 1025305315123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1025305315291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1215525 + ... + 1878326.

It is an arithmetic number, because the mean of its divisors is an integer number (50095651584).

Almost surely, 2^{1025305315251} is an apocalyptic number.

1025305315251 is a deficient number, since it is larger than the sum of its proper divisors (577755535437).

1025305315251 is a wasteful number, since it uses less digits than its factorization.

1025305315251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094271.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 1025305315251 in words is "one trillion, twenty-five billion, three hundred five million, three hundred fifteen thousand, two hundred fifty-one".