1225949319693 has 16 divisors (see below), whose sum is σ = 2075681388160. Its totient is φ = 700542468288.

The previous prime is 1225949319611. The next prime is 1225949319737. The reversal of 1225949319693 is 3969139495221.

1225949319693 is a `hidden beast` number, since 1 + 2 + 2 + 59 + 493 + 1 + 9 + 6 + 93 = 666.

It is not a de Polignac number, because 1225949319693 - 2¹² = 1225949315597 is a prime.

It is a super-2 number, since 2×1225949319693² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225949319693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225949311693) 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, 3243251980 + ... + 3243252357.

It is an arithmetic number, because the mean of its divisors is an integer number (129730086760).

Almost surely, 2^{1225949319693} is an apocalyptic number.

It is an amenable number.

1225949319693 is a deficient number, since it is larger than the sum of its proper divisors (849732068467).

1225949319693 is an equidigital number, since it uses as much as digits as its factorization.

1225949319693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486504353 (or 6486504347 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 63.

The spelling of 1225949319693 in words is "one trillion, two hundred twenty-five billion, nine hundred forty-nine million, three hundred nineteen thousand, six hundred ninety-three".