25830645 has 16 divisors (see below), whose sum is σ = 41402112. Its totient is φ = 13752000.

The previous prime is 25830643. The next prime is 25830647. The reversal of 25830645 is 54603852.

It is an interprime number because it is at equal distance from previous prime (25830643) and next prime (25830647).

It is not a de Polignac number, because 25830645 - 2¹ = 25830643 is a prime.

It is a super-2 number, since 2×25830645² = 1334444442232050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25830641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10119 + ... + 12411.

It is an arithmetic number, because the mean of its divisors is an integer number (2587632).

Almost surely, 2^25830645 is an apocalyptic number.

It is an amenable number.

25830645 is a deficient number, since it is larger than the sum of its proper divisors (15571467).

25830645 is a wasteful number, since it uses less digits than its factorization.

25830645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 25830645 is about 5082.3857586767. The cubic root of 25830645 is about 295.6049827251.

It can be divided in two parts, 258 and 30645, that added together give a palindrome (30903).

The spelling of 25830645 in words is "twenty-five million, eight hundred thirty thousand, six hundred forty-five".