1325849406 has 64 divisors (see below), whose sum is σ = 3062707200. Its totient is φ = 374814720.

The previous prime is 1325849381. The next prime is 1325849407. The reversal of 1325849406 is 6049485231.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325849407) 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, 2952670 + ... + 2953118.

It is an arithmetic number, because the mean of its divisors is an integer number (47854800).

Almost surely, 2^1325849406 is an apocalyptic number.

1325849406 is an abundant number, since it is smaller than the sum of its proper divisors (1736857794).

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

1325849406 is a wasteful number, since it uses less digits than its factorization.

1325849406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1325849406 is about 36412.2150658265. The cubic root of 1325849406 is about 1098.5792693936.

The spelling of 1325849406 in words is "one billion, three hundred twenty-five million, eight hundred forty-nine thousand, four hundred six".