2565136424 has 8 divisors (see below), whose sum is σ = 4809630810. Its totient is φ = 1282568208.

The previous prime is 2565136403. The next prime is 2565136429. The reversal of 2565136424 is 4246315652.

It can be written as a sum of positive squares in only one way, i.e., 1950988900 + 614147524 = 44170^2 + 24782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2565136429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160321019 + ... + 160321034.

Almost surely, 2^2565136424 is an apocalyptic number.

It is an amenable number.

2565136424 is a deficient number, since it is larger than the sum of its proper divisors (2244494386).

2565136424 is a wasteful number, since it uses less digits than its factorization.

2565136424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320642059 (or 320642055 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

The square root of 2565136424 is about 50647.1758738826. The cubic root of 2565136424 is about 1368.8950587796.

The spelling of 2565136424 in words is "two billion, five hundred sixty-five million, one hundred thirty-six thousand, four hundred twenty-four".