25826520 has 64 divisors (see below), whose sum is σ = 77821920. Its totient is φ = 6856704.

The previous prime is 25826513. The next prime is 25826527. The reversal of 25826520 is 2562852.

It is an interprime number because it is at equal distance from previous prime (25826513) and next prime (25826527).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25826527) 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, 44472 + ... + 45048.

Almost surely, 2^25826520 is an apocalyptic number.

25826520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25826520 is an abundant number, since it is smaller than the sum of its proper divisors (51995400).

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

25826520 is a wasteful number, since it uses less digits than its factorization.

25826520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 25826520 is about 5081.9799291221. The cubic root of 25826520 is about 295.5892464363.

The spelling of 25826520 in words is "twenty-five million, eight hundred twenty-six thousand, five hundred twenty".