259402563 has 12 divisors (see below), whose sum is σ = 428220208. Its totient is φ = 148230000.

The previous prime is 259402553. The next prime is 259402571. The reversal of 259402563 is 365204952.

259402563 is a `hidden beast` number, since 2 + 5 + 94 + 0 + 2 + 563 = 666.

It is not a de Polignac number, because 259402563 - 2⁶ = 259402499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259402553) 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, 2058688 + ... + 2058813.

Almost surely, 2^259402563 is an apocalyptic number.

259402563 is a deficient number, since it is larger than the sum of its proper divisors (168817645).

259402563 is a wasteful number, since it uses less digits than its factorization.

259402563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117514 (or 4117511 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 259402563 is about 16105.9791071515. The cubic root of 259402563 is about 637.7611903202.

The spelling of 259402563 in words is "two hundred fifty-nine million, four hundred two thousand, five hundred sixty-three".