25022643 has 16 divisors (see below), whose sum is σ = 35013120. Its totient is φ = 15865344.

The previous prime is 25022629. The next prime is 25022651. The reversal of 25022643 is 34622052.

It is not a de Polignac number, because 25022643 - 2⁶ = 25022579 is a prime.

It is a super-2 number, since 2×25022643² = 1252265325410898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25022653) 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, 12378 + ... + 14256.

It is an arithmetic number, because the mean of its divisors is an integer number (2188320).

Almost surely, 2^25022643 is an apocalyptic number.

25022643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25022643 is a deficient number, since it is larger than the sum of its proper divisors (9990477).

25022643 is a wasteful number, since it uses less digits than its factorization.

25022643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 25022643 is about 5002.2637875266. The cubic root of 25022643 is about 292.4900252278.

Adding to 25022643 its reverse (34622052), we get a palindrome (59644695).

The spelling of 25022643 in words is "twenty-five million, twenty-two thousand, six hundred forty-three".