1252656015620 has 24 divisors (see below), whose sum is σ = 2769029088000. Its totient is φ = 474690700512.

The previous prime is 1252656015613. The next prime is 1252656015641. The reversal of 1252656015620 is 265106562521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1648231220 + ... + 1648231979.

It is an arithmetic number, because the mean of its divisors is an integer number (115376212000).

Almost surely, 2^{1252656015620} is an apocalyptic number.

1252656015620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252656015620 is an abundant number, since it is smaller than the sum of its proper divisors (1516373072380).

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

1252656015620 is a wasteful number, since it uses less digits than its factorization.

1252656015620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296463227 (or 3296463225 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 1252656015620 in words is "one trillion, two hundred fifty-two billion, six hundred fifty-six million, fifteen thousand, six hundred twenty".