2565420523 has 8 divisors (see below), whose sum is σ = 2597491008. Its totient is φ = 2533377864.

The previous prime is 2565420521. The next prime is 2565420541. The reversal of 2565420523 is 3250245652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2565420523 - 2¹ = 2565420521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565420521) 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, 227136 + ... + 238162.

It is an arithmetic number, because the mean of its divisors is an integer number (324686376).

Almost surely, 2^2565420523 is an apocalyptic number.

2565420523 is a deficient number, since it is larger than the sum of its proper divisors (32070485).

2565420523 is a wasteful number, since it uses less digits than its factorization.

2565420523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13913.

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 2565420523 is about 50649.9804837080. The cubic root of 2565420523 is about 1368.9455937605.

The spelling of 2565420523 in words is "two billion, five hundred sixty-five million, four hundred twenty thousand, five hundred twenty-three".