1250345012521 has 16 divisors (see below), whose sum is σ = 1365697585728. Its totient is φ = 1135273708800.

The previous prime is 1250345012507. The next prime is 1250345012533. The reversal of 1250345012521 is 1252105430521.

It is not a de Polignac number, because 1250345012521 - 2¹⁹ = 1250344488233 is a prime.

It is a super-2 number, since 2×1250345012521² (a number of 25 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1250345012561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96866950 + ... + 96879856.

It is an arithmetic number, because the mean of its divisors is an integer number (85356099108).

Almost surely, 2^{1250345012521} is an apocalyptic number.

1250345012521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1250345012521 is a deficient number, since it is larger than the sum of its proper divisors (115352573207).

1250345012521 is a wasteful number, since it uses less digits than its factorization.

1250345012521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23112.

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

The spelling of 1250345012521 in words is "one trillion, two hundred fifty billion, three hundred forty-five million, twelve thousand, five hundred twenty-one".