25641022 has 16 divisors (see below), whose sum is σ = 42206832. Its totient is φ = 11585920.

The previous prime is 25640983. The next prime is 25641047. The reversal of 25641022 is 22014652.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 25640984 and 25641002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438 + ... + 7174.

It is an arithmetic number, because the mean of its divisors is an integer number (2637927).

Almost surely, 2^25641022 is an apocalyptic number.

25641022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25641022 is a deficient number, since it is larger than the sum of its proper divisors (16565810).

25641022 is a wasteful number, since it uses less digits than its factorization.

25641022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6923.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 25641022 is about 5063.6964758958. The cubic root of 25641022 is about 294.8798591508.

Adding to 25641022 its reverse (22014652), we get a palindrome (47655674).

The spelling of 25641022 in words is "twenty-five million, six hundred forty-one thousand, twenty-two".