1025523533251 has 6 divisors (see below), whose sum is σ = 1192955946900. Its totient is φ = 879020171316.

The previous prime is 1025523533227. The next prime is 1025523533323. The reversal of 1025523533251 is 1523353255201.

It is not a de Polignac number, because 1025523533251 - 2³⁵ = 991163794883 is a prime.

It is a super-2 number, since 2×1025523533251² (a number of 25 digits) contains 22 as substring.

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 1025523533251.

It is not an unprimeable number, because it can be changed into a prime (1025523534251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10464525801 + ... + 10464525898.

It is an arithmetic number, because the mean of its divisors is an integer number (198825991150).

Almost surely, 2^{1025523533251} is an apocalyptic number.

1025523533251 is a deficient number, since it is larger than the sum of its proper divisors (167432413649).

1025523533251 is an equidigital number, since it uses as much as digits as its factorization.

1025523533251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20929051713 (or 20929051706 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 37.

Adding to 1025523533251 its reverse (1523353255201), we get a palindrome (2548876788452).

The spelling of 1025523533251 in words is "one trillion, twenty-five billion, five hundred twenty-three million, five hundred thirty-three thousand, two hundred fifty-one".