1225521337 has 8 divisors (see below), whose sum is σ = 1292180960. Its totient is φ = 1159077600.

The previous prime is 1225521301. The next prime is 1225521379. The reversal of 1225521337 is 7331255221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1225521337 - 2¹¹ = 1225519289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225521299 and 1225521308.

It is not an unprimeable number, because it can be changed into a prime (1225521937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42243 + ... + 65080.

It is an arithmetic number, because the mean of its divisors is an integer number (161522620).

Almost surely, 2^1225521337 is an apocalyptic number.

It is an amenable number.

1225521337 is a deficient number, since it is larger than the sum of its proper divisors (66659623).

1225521337 is a wasteful number, since it uses less digits than its factorization.

1225521337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107943.

The product of its digits is 12600, while the sum is 31.

The square root of 1225521337 is about 35007.4468791999. The cubic root of 1225521337 is about 1070.1392478981.

Adding to 1225521337 its reverse (7331255221), we get a palindrome (8556776558).

The spelling of 1225521337 in words is "one billion, two hundred twenty-five million, five hundred twenty-one thousand, three hundred thirty-seven".