25434528 has 72 divisors (see below), whose sum is σ = 77680512. Its totient is φ = 7265664.

The previous prime is 25434523. The next prime is 25434547. The reversal of 25434528 is 82543452.

It is not an unprimeable number, because it can be changed into a prime (25434523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2001 + ... + 7407.

It is an arithmetic number, because the mean of its divisors is an integer number (1078896).

Almost surely, 2^25434528 is an apocalyptic number.

25434528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25434528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38840256).

25434528 is an abundant number, since it is smaller than the sum of its proper divisors (52245984).

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

25434528 is a wasteful number, since it uses less digits than its factorization.

25434528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434 (or 5419 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The square root of 25434528 is about 5043.2656087103. The cubic root of 25434528 is about 294.0861425581.

The spelling of 25434528 in words is "twenty-five million, four hundred thirty-four thousand, five hundred twenty-eight".