25536522 has 32 divisors (see below), whose sum is σ = 57081024. Its totient is φ = 7548800.

The previous prime is 25536517. The next prime is 25536523. The reversal of 25536522 is 22563552.

It is a super-2 number, since 2×25536522² = 1304227911712968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25536522.

It is not an unprimeable number, because it can be changed into a prime (25536523) 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, 2013 + ... + 7424.

It is an arithmetic number, because the mean of its divisors is an integer number (1783782).

Almost surely, 2^25536522 is an apocalyptic number.

25536522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25536522 is an abundant number, since it is smaller than the sum of its proper divisors (31544502).

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

25536522 is a wasteful number, since it uses less digits than its factorization.

25536522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9494.

The product of its digits is 18000, while the sum is 30.

The square root of 25536522 is about 5053.3673921456. The cubic root of 25536522 is about 294.4787193622.

The spelling of 25536522 in words is "twenty-five million, five hundred thirty-six thousand, five hundred twenty-two".