1225867577759 has 4 divisors (see below), whose sum is σ = 1337310084840. Its totient is φ = 1114425070680.

The previous prime is 1225867577749. The next prime is 1225867577777. The reversal of 1225867577759 is 9577757685221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225867577759 - 2¹⁶ = 1225867512223 is a prime.

It is a super-2 number, since 2×1225867577759² (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 = 1225867577692 and 1225867577701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225867577749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55721253524 + ... + 55721253545.

It is an arithmetic number, because the mean of its divisors is an integer number (334327521210).

Almost surely, 2^{1225867577759} is an apocalyptic number.

1225867577759 is a deficient number, since it is larger than the sum of its proper divisors (111442507081).

1225867577759 is a wasteful number, since it uses less digits than its factorization.

1225867577759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111442507080.

The product of its digits is 518616000, while the sum is 71.

The spelling of 1225867577759 in words is "one trillion, two hundred twenty-five billion, eight hundred sixty-seven million, five hundred seventy-seven thousand, seven hundred fifty-nine".