25220826 has 24 divisors (see below), whose sum is σ = 57860244. Its totient is φ = 7912320.

The previous prime is 25220821. The next prime is 25220851. The reversal of 25220826 is 62802252.

It can be written as a sum of positive squares in 2 ways, for example, as 20385225 + 4835601 = 4515^2 + 2199^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25220826.

It is not an unprimeable number, because it can be changed into a prime (25220821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40905 + ... + 41516.

Almost surely, 2^25220826 is an apocalyptic number.

25220826 is an abundant number, since it is smaller than the sum of its proper divisors (32639418).

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

25220826 is a wasteful number, since it uses less digits than its factorization.

25220826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82446 (or 82443 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 25220826 is about 5022.0340500638. The cubic root of 25220826 is about 293.2601834931.

The spelling of 25220826 in words is "twenty-five million, two hundred twenty thousand, eight hundred twenty-six".