1325747864 has 64 divisors (see below), whose sum is σ = 2871106560. Its totient is φ = 562176000.

The previous prime is 1325747861. The next prime is 1325747881. The reversal of 1325747864 is 4687475231.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325747861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3612209 + ... + 3612575.

It is an arithmetic number, because the mean of its divisors is an integer number (44861040).

Almost surely, 2^1325747864 is an apocalyptic number.

1325747864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1325747864 is an abundant number, since it is smaller than the sum of its proper divisors (1545358696).

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

1325747864 is a wasteful number, since it uses less digits than its factorization.

1325747864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 884 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The square root of 1325747864 is about 36410.8206993471. The cubic root of 1325747864 is about 1098.5512232762.

The spelling of 1325747864 in words is "one billion, three hundred twenty-five million, seven hundred forty-seven thousand, eight hundred sixty-four".