25343820 has 48 divisors (see below), whose sum is σ = 78849120. Its totient is φ = 6758208.

The previous prime is 25343819. The next prime is 25343827. The reversal of 25343820 is 2834352.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25343827) 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, 22927 + ... + 24006.

It is an arithmetic number, because the mean of its divisors is an integer number (1642690).

Almost surely, 2^25343820 is an apocalyptic number.

25343820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25343820 is an abundant number, since it is smaller than the sum of its proper divisors (53505300).

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

25343820 is a wasteful number, since it uses less digits than its factorization.

25343820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46951 (or 46943 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 25343820 is about 5034.2645937614. The cubic root of 25343820 is about 293.7361230807.

The spelling of 25343820 in words is "twenty-five million, three hundred forty-three thousand, eight hundred twenty".