25725870 has 64 divisors (see below), whose sum is σ = 69166080. Its totient is φ = 6804000.

The previous prime is 25725859. The next prime is 25725881. The reversal of 25725870 is 7852752.

25725870 is a `hidden beast` number, since 2 + 5 + 72 + 587 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (25725859) and next prime (25725881).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40455 + ... + 41085.

It is an arithmetic number, because the mean of its divisors is an integer number (1080720).

Almost surely, 2^25725870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25725870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34583040).

25725870 is an abundant number, since it is smaller than the sum of its proper divisors (43440210).

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

25725870 is a wasteful number, since it uses less digits than its factorization.

25725870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 25725870 is about 5072.0676257321. The cubic root of 25725870 is about 295.2047606477.

The spelling of 25725870 in words is "twenty-five million, seven hundred twenty-five thousand, eight hundred seventy".