1225995061669 has 12 divisors (see below), whose sum is σ = 1426921503744. Its totient is φ = 1050289975224.

The previous prime is 1225995061619. The next prime is 1225995061723. The reversal of 1225995061669 is 9661605995221.

It is not a de Polignac number, because 1225995061669 - 2¹⁷ = 1225994930597 is a prime.

It is a super-2 number, since 2×1225995061669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225995061619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6609189 + ... + 6792154.

It is an arithmetic number, because the mean of its divisors is an integer number (118910125312).

Almost surely, 2^{1225995061669} is an apocalyptic number.

It is an amenable number.

1225995061669 is a deficient number, since it is larger than the sum of its proper divisors (200926442075).

1225995061669 is a wasteful number, since it uses less digits than its factorization.

1225995061669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13403224 (or 13403217 counting only the distinct ones).

The product of its (nonzero) digits is 15746400, while the sum is 61.

The spelling of 1225995061669 in words is "one trillion, two hundred twenty-five billion, nine hundred ninety-five million, sixty-one thousand, six hundred sixty-nine".