2562405420 has 24 divisors (see below), whose sum is σ = 7174735344. Its totient is φ = 683308096.

The previous prime is 2562405401. The next prime is 2562405421. The reversal of 2562405420 is 245042652.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2562405421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21353319 + ... + 21353438.

It is an arithmetic number, because the mean of its divisors is an integer number (298947306).

Almost surely, 2^2562405420 is an apocalyptic number.

2562405420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2562405420 is an abundant number, since it is smaller than the sum of its proper divisors (4612329924).

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

2562405420 is a wasteful number, since it uses less digits than its factorization.

2562405420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42706769 (or 42706767 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2562405420 is about 50620.2076250187. The cubic root of 2562405420 is about 1368.4090826260.

The spelling of 2562405420 in words is "two billion, five hundred sixty-two million, four hundred five thousand, four hundred twenty".