1325398725 has 72 divisors (see below), whose sum is σ = 2731527552. Its totient is φ = 601776000.

The previous prime is 1325398661. The next prime is 1325398729. The reversal of 1325398725 is 5278935231.

1325398725 is a `hidden beast` number, since 1 + 32 + 539 + 87 + 2 + 5 = 666.

It is not a de Polignac number, because 1325398725 - 2⁶ = 1325398661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325398729) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 235039 + ... + 240611.

Almost surely, 2^1325398725 is an apocalyptic number.

1325398725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1325398725 is an abundant number, since it is smaller than the sum of its proper divisors (1406128827).

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

1325398725 is a wasteful number, since it uses less digits than its factorization.

1325398725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747 (or 5739 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 1325398725 is about 36406.0259435165. The cubic root of 1325398725 is about 1098.4547794098.

The spelling of 1325398725 in words is "one billion, three hundred twenty-five million, three hundred ninety-eight thousand, seven hundred twenty-five".