25890270 has 128 divisors (see below), whose sum is σ = 75866112. Its totient is φ = 5529600.

The previous prime is 25890251. The next prime is 25890299. The reversal of 25890270 is 7209852.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 266862 + ... + 266958.

It is an arithmetic number, because the mean of its divisors is an integer number (592704).

Almost surely, 2^25890270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25890270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37933056).

25890270 is an abundant number, since it is smaller than the sum of its proper divisors (49975842).

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

25890270 is a wasteful number, since it uses less digits than its factorization.

25890270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 25890270 is about 5088.2482250771. The cubic root of 25890270 is about 295.8322567353.

The spelling of 25890270 in words is "twenty-five million, eight hundred ninety thousand, two hundred seventy".