25965450 has 72 divisors (see below), whose sum is σ = 79735968. Its totient is φ = 5934240.

The previous prime is 25965439. The next prime is 25965497. The reversal of 25965450 is 5456952.

25965450 is a `hidden beast` number, since 25 + 96 + 545 + 0 = 666.

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 972 + ... + 7271.

It is an arithmetic number, because the mean of its divisors is an integer number (1107444).

Almost surely, 2^25965450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25965450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39867984).

25965450 is an abundant number, since it is smaller than the sum of its proper divisors (53770518).

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

25965450 is a wasteful number, since it uses less digits than its factorization.

25965450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8268 (or 8260 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 25965450 is about 5095.6304811083. The cubic root of 25965450 is about 296.1183252890.

The spelling of 25965450 in words is "twenty-five million, nine hundred sixty-five thousand, four hundred fifty".