25434378 has 16 divisors (see below), whose sum is σ = 56520960. Its totient is φ = 8478108.

The previous prime is 25434373. The next prime is 25434403. The reversal of 25434378 is 87343452.

It is a happy number.

25434378 is a `hidden beast` number, since 2 + 543 + 43 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (25434373) 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, 235450 + ... + 235557.

It is an arithmetic number, because the mean of its divisors is an integer number (3532560).

Almost surely, 2^25434378 is an apocalyptic number.

25434378 is an abundant number, since it is smaller than the sum of its proper divisors (31086582).

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

25434378 is a wasteful number, since it uses less digits than its factorization.

25434378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471018 (or 471012 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 25434378 is about 5043.2507373717. The cubic root of 25434378 is about 294.0855644331.

The spelling of 25434378 in words is "twenty-five million, four hundred thirty-four thousand, three hundred seventy-eight".