1325129456 has 40 divisors (see below), whose sum is σ = 2939154144. Its totient is φ = 566956800.

The previous prime is 1325129431. The next prime is 1325129461. The reversal of 1325129456 is 6549215231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59006 + ... + 78306.

Almost surely, 2^1325129456 is an apocalyptic number.

1325129456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1325129456 is an abundant number, since it is smaller than the sum of its proper divisors (1614024688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1325129456 is a wasteful number, since it uses less digits than its factorization.

1325129456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19929 (or 19923 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 1325129456 is about 36402.3276178873. The cubic root of 1325129456 is about 1098.3803867391.

The spelling of 1325129456 in words is "one billion, three hundred twenty-five million, one hundred twenty-nine thousand, four hundred fifty-six".