2564426450 has 24 divisors (see below), whose sum is σ = 4772061012. Its totient is φ = 1025291520.

The previous prime is 2564426443. The next prime is 2564426453. The reversal of 2564426450 is 546244652.

It can be written as a sum of positive squares in 6 ways, for example, as 1280852521 + 1283573929 = 35789^2 + 35827^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2564426453) 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, 108062 + ... + 129638.

Almost surely, 2^2564426450 is an apocalyptic number.

2564426450 is a deficient number, since it is larger than the sum of its proper divisors (2207634562).

2564426450 is a wasteful number, since it uses less digits than its factorization.

2564426450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23966 (or 23961 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

The square root of 2564426450 is about 50640.1663701848. The cubic root of 2564426450 is about 1368.7687536612.

The spelling of 2564426450 in words is "two billion, five hundred sixty-four million, four hundred twenty-six thousand, four hundred fifty".