25801434 has 12 divisors (see below), whose sum is σ = 55903146. Its totient is φ = 8600472.

The previous prime is 25801421. The next prime is 25801439. The reversal of 25801434 is 43410852.

It can be written as a sum of positive squares in only one way, i.e., 24354225 + 1447209 = 4935^2 + 1203^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25801398 and 25801407.

It is not an unprimeable number, because it can be changed into a prime (25801439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 716689 + ... + 716724.

Almost surely, 2^25801434 is an apocalyptic number.

25801434 is an abundant number, since it is smaller than the sum of its proper divisors (30101712).

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

25801434 is a wasteful number, since it uses less digits than its factorization.

25801434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433421 (or 1433418 counting only the distinct ones).

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

The square root of 25801434 is about 5079.5111969559. The cubic root of 25801434 is about 295.4935108129.

The spelling of 25801434 in words is "twenty-five million, eight hundred one thousand, four hundred thirty-four".