25278834 has 32 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 7187472.

The previous prime is 25278833. The next prime is 25278839. The reversal of 25278834 is 43887252.

It is a junction number, because it is equal to n+sod(n) for n = 25278792 and 25278801.

It is not an unprimeable number, because it can be changed into a prime (25278833) 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, 8017 + ... + 10715.

It is an arithmetic number, because the mean of its divisors is an integer number (1814400).

Almost surely, 2^25278834 is an apocalyptic number.

25278834 is an abundant number, since it is smaller than the sum of its proper divisors (32781966).

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

25278834 is a wasteful number, since it uses less digits than its factorization.

25278834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934.

The product of its digits is 107520, while the sum is 39.

The square root of 25278834 is about 5027.8060821794. The cubic root of 25278834 is about 293.4848445363.

The spelling of 25278834 in words is "twenty-five million, two hundred seventy-eight thousand, eight hundred thirty-four".