1225337773 has 4 divisors (see below), whose sum is σ = 1336732128. Its totient is φ = 1113943420.

The previous prime is 1225337731. The next prime is 1225337791. The reversal of 1225337773 is 3777335221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3777335221 = 11 ⋅343394111.

It is a cyclic number.

It is not a de Polignac number, because 1225337773 - 2¹⁷ = 1225206701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225337173) 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, 55697161 + ... + 55697182.

It is an arithmetic number, because the mean of its divisors is an integer number (334183032).

Almost surely, 2^1225337773 is an apocalyptic number.

It is an amenable number.

1225337773 is a deficient number, since it is larger than the sum of its proper divisors (111394355).

1225337773 is a wasteful number, since it uses less digits than its factorization.

1225337773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111394354.

The product of its digits is 185220, while the sum is 40.

The square root of 1225337773 is about 35004.8249959916. The cubic root of 1225337773 is about 1070.0858151688.

The spelling of 1225337773 in words is "one billion, two hundred twenty-five million, three hundred thirty-seven thousand, seven hundred seventy-three".