25793220 has 24 divisors (see below), whose sum is σ = 72221184. Its totient is φ = 6878176.

The previous prime is 25793171. The next prime is 25793227. The reversal of 25793220 is 2239752.

25793220 = T₁₈₄ + T₁₈₅ + ... + T₅₄₃.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (25793227) 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, 214884 + ... + 215003.

It is an arithmetic number, because the mean of its divisors is an integer number (3009216).

Almost surely, 2^25793220 is an apocalyptic number.

25793220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25793220 is an abundant number, since it is smaller than the sum of its proper divisors (46427964).

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

25793220 is a wasteful number, since it uses less digits than its factorization.

25793220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429899 (or 429897 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 25793220 is about 5078.7025902291. The cubic root of 25793220 is about 295.4621502651.

The spelling of 25793220 in words is "twenty-five million, seven hundred ninety-three thousand, two hundred twenty".