1252651276520 has 32 divisors (see below), whose sum is σ = 3221103283200. Its totient is φ = 429480437568.

The previous prime is 1252651276511. The next prime is 1252651276529. The reversal of 1252651276520 is 256721562521.

It is an interprime number because it is at equal distance from previous prime (1252651276511) and next prime (1252651276529).

It is not an unprimeable number, because it can be changed into a prime (1252651276529) 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, 2236877000 + ... + 2236877559.

It is an arithmetic number, because the mean of its divisors is an integer number (100659477600).

Almost surely, 2^{1252651276520} is an apocalyptic number.

1252651276520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252651276520 is an abundant number, since it is smaller than the sum of its proper divisors (1968452006680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252651276520 is a wasteful number, since it uses less digits than its factorization.

1252651276520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473754577 (or 4473754573 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 1252651276520 in words is "one trillion, two hundred fifty-two billion, six hundred fifty-one million, two hundred seventy-six thousand, five hundred twenty".