25965390 has 96 divisors (see below), whose sum is σ = 71705088. Its totient is φ = 6001600.

The previous prime is 25965377. The next prime is 25965391. The reversal of 25965390 is 9356952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25965391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83335 + ... + 83645.

It is an arithmetic number, because the mean of its divisors is an integer number (746928).

Almost surely, 2^25965390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25965390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35852544).

25965390 is an abundant number, since it is smaller than the sum of its proper divisors (45739698).

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

25965390 is a wasteful number, since it uses less digits than its factorization.

25965390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 25965390 is about 5095.6245937078. The cubic root of 25965390 is about 296.1180972024.

The spelling of 25965390 in words is "twenty-five million, nine hundred sixty-five thousand, three hundred ninety".