1225075775 has 24 divisors (see below), whose sum is σ = 1893938304. Its totient is φ = 763682400.

The previous prime is 1225075769. The next prime is 1225075801. The reversal of 1225075775 is 5775705221.

It is not a de Polignac number, because 1225075775 - 2¹⁶ = 1225010239 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316277 + ... + 320126.

It is an arithmetic number, because the mean of its divisors is an integer number (78914096).

Almost surely, 2^1225075775 is an apocalyptic number.

1225075775 is a deficient number, since it is larger than the sum of its proper divisors (668862529).

1225075775 is a wasteful number, since it uses less digits than its factorization.

1225075775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636431 (or 636426 counting only the distinct ones).

The product of its (nonzero) digits is 171500, while the sum is 41.

The square root of 1225075775 is about 35001.0824832604. The cubic root of 1225075775 is about 1070.0095422330.

The spelling of 1225075775 in words is "one billion, two hundred twenty-five million, seventy-five thousand, seven hundred seventy-five".