2585361406 has 4 divisors (see below), whose sum is σ = 3878042112. Its totient is φ = 1292680702.

The previous prime is 2585361371. The next prime is 2585361463. The reversal of 2585361406 is 6041635852.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646340350 + ... + 646340353.

It is an arithmetic number, because the mean of its divisors is an integer number (969510528).

Almost surely, 2^2585361406 is an apocalyptic number.

2585361406 is a deficient number, since it is larger than the sum of its proper divisors (1292680706).

2585361406 is a wasteful number, since it uses less digits than its factorization.

2585361406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292680705.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 2585361406 is about 50846.4492958948. The cubic root of 2585361406 is about 1372.4833580264.

The spelling of 2585361406 in words is "two billion, five hundred eighty-five million, three hundred sixty-one thousand, four hundred six".