25739632 has 40 divisors (see below), whose sum is σ = 53206416. Its totient is φ = 12020736.

The previous prime is 25739627. The next prime is 25739633. The reversal of 25739632 is 23693752.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25739591 and 25739600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25739633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46783 + ... + 47329.

Almost surely, 2^25739632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25739632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26603208).

25739632 is an abundant number, since it is smaller than the sum of its proper divisors (27466784).

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

25739632 is a wasteful number, since it uses less digits than its factorization.

25739632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 739 counting only the distinct ones).

The product of its digits is 68040, while the sum is 37.

The square root of 25739632 is about 5073.4240902964. The cubic root of 25739632 is about 295.2573909857.

The spelling of 25739632 in words is "twenty-five million, seven hundred thirty-nine thousand, six hundred thirty-two".