25862490 has 96 divisors (see below), whose sum is σ = 72334080. Its totient is φ = 6640704.

The previous prime is 25862489. The next prime is 25862503. The reversal of 25862490 is 9426852.

It is a happy number.

25862490 is a `hidden beast` number, since 25 + 8 + 624 + 9 + 0 = 666.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 70287 + ... + 70653.

It is an arithmetic number, because the mean of its divisors is an integer number (753480).

Almost surely, 2^25862490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25862490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36167040).

25862490 is an abundant number, since it is smaller than the sum of its proper divisors (46471590).

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

25862490 is a wasteful number, since it uses less digits than its factorization.

25862490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 25862490 is about 5085.5176727645. The cubic root of 25862490 is about 295.7264105209.

The spelling of 25862490 in words is "twenty-five million, eight hundred sixty-two thousand, four hundred ninety".