1249065386220 has 48 divisors (see below), whose sum is σ = 3582685114848. Its totient is φ = 324960099840.

The previous prime is 1249065386197. The next prime is 1249065386243. The reversal of 1249065386220 is 226835609421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1249065386197) and next prime (1249065386243).

It is a self number, because there is not a number n which added to its sum of digits gives 1249065386220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253872619 + ... + 253877538.

It is an arithmetic number, because the mean of its divisors is an integer number (74639273226).

Almost surely, 2^{1249065386220} is an apocalyptic number.

1249065386220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249065386220 is an abundant number, since it is smaller than the sum of its proper divisors (2333619728628).

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

1249065386220 is a wasteful number, since it uses less digits than its factorization.

1249065386220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507750210 (or 507750208 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 1249065386220 in words is "one trillion, two hundred forty-nine billion, sixty-five million, three hundred eighty-six thousand, two hundred twenty".