1331225425 has 24 divisors (see below), whose sum is σ = 1716408000. Its totient is φ = 1022978880.

The previous prime is 1331225419. The next prime is 1331225429. The reversal of 1331225425 is 5245221331.

It is not a de Polignac number, because 1331225425 - 2⁹ = 1331224913 is a prime.

It is a super-3 number, since 3×1331225425³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1331225393 and 1331225402.

It is not an unprimeable number, because it can be changed into a prime (1331225429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139662 + ... + 148888.

It is an arithmetic number, because the mean of its divisors is an integer number (71517000).

Almost surely, 2^1331225425 is an apocalyptic number.

It is an amenable number.

1331225425 is a deficient number, since it is larger than the sum of its proper divisors (385182575).

1331225425 is a wasteful number, since it uses less digits than its factorization.

1331225425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9465 (or 9460 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 1331225425 is about 36485.9620265110. The cubic root of 1331225425 is about 1100.0620970454.

Adding to 1331225425 its reverse (5245221331), we get a palindrome (6576446756).

The spelling of 1331225425 in words is "one billion, three hundred thirty-one million, two hundred twenty-five thousand, four hundred twenty-five".