1325138257632 has 48 divisors (see below), whose sum is σ = 3975414774912. Its totient is φ = 378610930560.

The previous prime is 1325138257621. The next prime is 1325138257747. The reversal of 1325138257632 is 2367528315231.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 985965294 + ... + 985966637.

It is an arithmetic number, because the mean of its divisors is an integer number (82821141144).

Almost surely, 2^{1325138257632} is an apocalyptic number.

1325138257632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1325138257632 is an abundant number, since it is smaller than the sum of its proper divisors (2650276517280).

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

1325138257632 is a wasteful number, since it uses less digits than its factorization.

1325138257632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971931951 (or 1971931943 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 48.

The spelling of 1325138257632 in words is "one trillion, three hundred twenty-five billion, one hundred thirty-eight million, two hundred fifty-seven thousand, six hundred thirty-two".