25705522 has 16 divisors (see below), whose sum is σ = 40033152. Its totient is φ = 12370320.

The previous prime is 25705517. The next prime is 25705523. The reversal of 25705522 is 22550752.

It is a super-2 number, since 2×25705522² = 1321547722584968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25705523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3493 + ... + 7975.

It is an arithmetic number, because the mean of its divisors is an integer number (2502072).

Almost surely, 2^25705522 is an apocalyptic number.

25705522 is a deficient number, since it is larger than the sum of its proper divisors (14327630).

25705522 is a wasteful number, since it uses less digits than its factorization.

25705522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4593.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 25705522 is about 5070.0613408518. The cubic root of 25705522 is about 295.1269089122.

The spelling of 25705522 in words is "twenty-five million, seven hundred five thousand, five hundred twenty-two".