25829420 has 12 divisors (see below), whose sum is σ = 54241824. Its totient is φ = 10331760.

The previous prime is 25829407. The next prime is 25829423. The reversal of 25829420 is 2492852.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25829423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645716 + ... + 645755.

It is an arithmetic number, because the mean of its divisors is an integer number (4520152).

Almost surely, 2^25829420 is an apocalyptic number.

25829420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25829420 is an abundant number, since it is smaller than the sum of its proper divisors (28412404).

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

25829420 is a wasteful number, since it uses less digits than its factorization.

25829420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291480 (or 1291478 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 25829420 is about 5082.2652429797. The cubic root of 25829420 is about 295.6003096991.

The spelling of 25829420 in words is "twenty-five million, eight hundred twenty-nine thousand, four hundred twenty".