1250261017643 has 6 divisors (see below), whose sum is σ = 1374253845972. Its totient is φ = 1136600925020.

The previous prime is 1250261017627. The next prime is 1250261017669. The reversal of 1250261017643 is 3467101620521.

It is not a de Polignac number, because 1250261017643 - 2⁴ = 1250261017627 is a prime.

It is a super-2 number, since 2×1250261017643² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1250261017597 and 1250261017606.

It is not an unprimeable number, because it can be changed into a prime (1250261017043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5166367721 + ... + 5166367962.

It is an arithmetic number, because the mean of its divisors is an integer number (229042307662).

Almost surely, 2^{1250261017643} is an apocalyptic number.

1250261017643 is a deficient number, since it is larger than the sum of its proper divisors (123992828329).

1250261017643 is a wasteful number, since it uses less digits than its factorization.

1250261017643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10332735705 (or 10332735694 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 1250261017643 in words is "one trillion, two hundred fifty billion, two hundred sixty-one million, seventeen thousand, six hundred forty-three".