1251532330253 has 8 divisors (see below), whose sum is σ = 1255207393440. Its totient is φ = 1247861424880.

The previous prime is 1251532330231. The next prime is 1251532330277. The reversal of 1251532330253 is 3520332351521.

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 1251532330253 - 2³⁰ = 1250458588429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251532330283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436043 + ... + 1641096.

It is an arithmetic number, because the mean of its divisors is an integer number (156900924180).

Almost surely, 2^{1251532330253} is an apocalyptic number.

It is an amenable number.

1251532330253 is a deficient number, since it is larger than the sum of its proper divisors (3675063187).

1251532330253 is a wasteful number, since it uses less digits than its factorization.

1251532330253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078907.

The product of its (nonzero) digits is 81000, while the sum is 35.

Adding to 1251532330253 its reverse (3520332351521), we get a palindrome (4771864681774).

The spelling of 1251532330253 in words is "one trillion, two hundred fifty-one billion, five hundred thirty-two million, three hundred thirty thousand, two hundred fifty-three".