2572406405 has 4 divisors (see below), whose sum is σ = 3086887692. Its totient is φ = 2057925120.

The previous prime is 2572406399. The next prime is 2572406407. The reversal of 2572406405 is 5046042752.

2572406405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1588580449 + 983825956 = 39857^2 + 31366^2 .

It is not a de Polignac number, because 2572406405 - 2¹² = 2572402309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2572406407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257240636 + ... + 257240645.

It is an arithmetic number, because the mean of its divisors is an integer number (771721923).

Almost surely, 2^2572406405 is an apocalyptic number.

It is an amenable number.

2572406405 is a deficient number, since it is larger than the sum of its proper divisors (514481287).

2572406405 is an equidigital number, since it uses as much as digits as its factorization.

2572406405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514481286.

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 2572406405 is about 50718.8959363273. The cubic root of 2572406405 is about 1370.1870568816.

The spelling of 2572406405 in words is "two billion, five hundred seventy-two million, four hundred six thousand, four hundred five".