1225342388 has 48 divisors (see below), whose sum is σ = 2396096640. Its totient is φ = 545301504.

The previous prime is 1225342381. The next prime is 1225342409. The reversal of 1225342388 is 8832435221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225342381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134795 + ... + 143597.

It is an arithmetic number, because the mean of its divisors is an integer number (49918680).

Almost surely, 2^1225342388 is an apocalyptic number.

It is an amenable number.

1225342388 is a deficient number, since it is larger than the sum of its proper divisors (1170754252).

1225342388 is a wasteful number, since it uses less digits than its factorization.

1225342388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8936 (or 8934 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 1225342388 is about 35004.8909154135. The cubic root of 1225342388 is about 1070.0871585915.

The spelling of 1225342388 in words is "one billion, two hundred twenty-five million, three hundred forty-two thousand, three hundred eighty-eight".