1321333425 has 48 divisors (see below), whose sum is σ = 2449744000. Its totient is φ = 698207040.

The previous prime is 1321333411. The next prime is 1321333439. The reversal of 1321333425 is 5243331231.

1321333425 is a `hidden beast` number, since 1 + 321 + 3 + 334 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1321333411) and next prime (1321333439).

It is not a de Polignac number, because 1321333425 - 2⁵ = 1321333393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64596 + ... + 82554.

Almost surely, 2^1321333425 is an apocalyptic number.

1321333425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1321333425 is a deficient number, since it is larger than the sum of its proper divisors (1128410575).

1321333425 is a wasteful number, since it uses less digits than its factorization.

1321333425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18087 (or 18076 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 1321333425 is about 36350.1502747925. The cubic root of 1321333425 is about 1097.3305588150.

Adding to 1321333425 its reverse (5243331231), we get a palindrome (6564664656).

The spelling of 1321333425 in words is "one billion, three hundred twenty-one million, three hundred thirty-three thousand, four hundred twenty-five".