25915434 has 16 divisors (see below), whose sum is σ = 54084672. Its totient is φ = 8262848.

The previous prime is 25915433. The next prime is 25915451. The reversal of 25915434 is 43451952.

It is a junction number, because it is equal to n+sod(n) for n = 25915395 and 25915404.

It is not an unprimeable number, because it can be changed into a prime (25915433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93759 + ... + 94034.

It is an arithmetic number, because the mean of its divisors is an integer number (3380292).

Almost surely, 2^25915434 is an apocalyptic number.

25915434 is an abundant number, since it is smaller than the sum of its proper divisors (28169238).

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

25915434 is a wasteful number, since it uses less digits than its factorization.

25915434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187821.

The product of its digits is 21600, while the sum is 33.

The square root of 25915434 is about 5090.7203812427. The cubic root of 25915434 is about 295.9280702382.

The spelling of 25915434 in words is "twenty-five million, nine hundred fifteen thousand, four hundred thirty-four".