25622664 has 16 divisors (see below), whose sum is σ = 64056720. Its totient is φ = 8540880.

The previous prime is 25622657. The next prime is 25622669. The reversal of 25622664 is 46622652.

It is a super-3 number, since 3×25622664³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25622669) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 533782 + ... + 533829.

It is an arithmetic number, because the mean of its divisors is an integer number (4003545).

Almost surely, 2^25622664 is an apocalyptic number.

25622664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25622664 is an abundant number, since it is smaller than the sum of its proper divisors (38434056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25622664 is a wasteful number, since it uses less digits than its factorization.

25622664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067620 (or 1067616 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 25622664 is about 5061.8834439367. The cubic root of 25622664 is about 294.8094680811.

The spelling of 25622664 in words is "twenty-five million, six hundred twenty-two thousand, six hundred sixty-four".