2575321920 has 84 divisors (see below), whose sum is σ = 8858044260. Its totient is φ = 686751744.

The previous prime is 2575321909. The next prime is 2575321927. The reversal of 2575321920 is 291235752.

It can be written as a sum of positive squares in 2 ways, for example, as 1818851904 + 756470016 = 42648^2 + 27504^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2575321927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 444225 + ... + 449984.

Almost surely, 2^2575321920 is an apocalyptic number.

2575321920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2575321920 is an abundant number, since it is smaller than the sum of its proper divisors (6282722340).

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

2575321920 is a wasteful number, since it uses less digits than its factorization.

2575321920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894232 (or 894219 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 2575321920 is about 50747.6296983416. The cubic root of 2575321920 is about 1370.7045091589.

The spelling of 2575321920 in words is "two billion, five hundred seventy-five million, three hundred twenty-one thousand, nine hundred twenty".