25787430 has 64 divisors (see below), whose sum is σ = 69336000. Its totient is φ = 6819840.

The previous prime is 25787423. The next prime is 25787431. The reversal of 25787430 is 3478752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25787431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39910 + ... + 40550.

It is an arithmetic number, because the mean of its divisors is an integer number (1083375).

Almost surely, 2^25787430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25787430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34668000).

25787430 is an abundant number, since it is smaller than the sum of its proper divisors (43548570).

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

25787430 is a wasteful number, since it uses less digits than its factorization.

25787430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 25787430 is about 5078.1325307636. The cubic root of 25787430 is about 295.4400403996.

The spelling of 25787430 in words is "twenty-five million, seven hundred eighty-seven thousand, four hundred thirty".