1225577407 has 4 divisors (see below), whose sum is σ = 1225786456. Its totient is φ = 1225368360.

The previous prime is 1225577399. The next prime is 1225577417. The reversal of 1225577407 is 7047755221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7047755221 = 13 ⋅542135017.

It is a cyclic number.

It is not a de Polignac number, because 1225577407 - 2³ = 1225577399 is a prime.

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 1225577407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225577417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95469 + ... + 107542.

It is an arithmetic number, because the mean of its divisors is an integer number (306446614).

Almost surely, 2^1225577407 is an apocalyptic number.

1225577407 is a deficient number, since it is larger than the sum of its proper divisors (209049).

1225577407 is an equidigital number, since it uses as much as digits as its factorization.

1225577407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209048.

The product of its (nonzero) digits is 137200, while the sum is 40.

The square root of 1225577407 is about 35008.2476996493. The cubic root of 1225577407 is about 1070.1555679709.

The spelling of 1225577407 in words is "one billion, two hundred twenty-five million, five hundred seventy-seven thousand, four hundred seven".