1225380347 has 4 divisors (see below), whose sum is σ = 1225509480. Its totient is φ = 1225251216.

The previous prime is 1225380329. The next prime is 1225380367. The reversal of 1225380347 is 7430835221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7430835221 = 71 ⋅104659651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225380347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225380367) 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, 49097 + ... + 69722.

It is an arithmetic number, because the mean of its divisors is an integer number (306377370).

Almost surely, 2^1225380347 is an apocalyptic number.

1225380347 is a deficient number, since it is larger than the sum of its proper divisors (129133).

1225380347 is a wasteful number, since it uses less digits than its factorization.

1225380347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129132.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 1225380347 is about 35005.4331068764. The cubic root of 1225380347 is about 1070.0982082974.

The spelling of 1225380347 in words is "one billion, two hundred twenty-five million, three hundred eighty thousand, three hundred forty-seven".