1325451870 has 64 divisors (see below), whose sum is σ = 3540983040. Its totient is φ = 352809504.

The previous prime is 1325451857. The next prime is 1325451871. The reversal of 1325451870 is 781545231.

1325451870 is a `hidden beast` number, since 1 + 32 + 545 + 1 + 87 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325451871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154309 + ... + 162671.

It is an arithmetic number, because the mean of its divisors is an integer number (55327860).

Almost surely, 2^1325451870 is an apocalyptic number.

1325451870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1325451870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1770491520).

1325451870 is an abundant number, since it is smaller than the sum of its proper divisors (2215531170).

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

1325451870 is a wasteful number, since it uses less digits than its factorization.

1325451870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8966 (or 8960 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 1325451870 is about 36406.7558291040. The cubic root of 1325451870 is about 1098.4694609286.

The spelling of 1325451870 in words is "one billion, three hundred twenty-five million, four hundred fifty-one thousand, eight hundred seventy".