1253521540210 has 8 divisors (see below), whose sum is σ = 2256338772396. Its totient is φ = 501408616080.

The previous prime is 1253521540199. The next prime is 1253521540211. The reversal of 1253521540210 is 120451253521.

It can be written as a sum of positive squares in 2 ways, for example, as 1063400251369 + 190121288841 = 1031213^2 + 436029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1253521540211) 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, 62676077001 + ... + 62676077020.

Almost surely, 2^{1253521540210} is an apocalyptic number.

1253521540210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253521540210 is a deficient number, since it is larger than the sum of its proper divisors (1002817232186).

1253521540210 is a wasteful number, since it uses less digits than its factorization.

1253521540210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125352154028.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 1253521540210 its reverse (120451253521), we get a palindrome (1373972793731).

The spelling of 1253521540210 in words is "one trillion, two hundred fifty-three billion, five hundred twenty-one million, five hundred forty thousand, two hundred ten".