25707132 has 60 divisors (see below), whose sum is σ = 73323096. Its totient is φ = 7788960.

The previous prime is 25707131. The next prime is 25707139. The reversal of 25707132 is 23170752.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25707096 and 25707105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25707131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43 + ... + 7170.

Almost surely, 2^25707132 is an apocalyptic number.

25707132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25707132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36661548).

25707132 is an abundant number, since it is smaller than the sum of its proper divisors (47615964).

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

25707132 is a wasteful number, since it uses less digits than its factorization.

25707132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7240 (or 7229 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 25707132 is about 5070.2201135651. The cubic root of 25707132 is about 295.1330702914.

Adding to 25707132 its reverse (23170752), we get a palindrome (48877884).

The spelling of 25707132 in words is "twenty-five million, seven hundred seven thousand, one hundred thirty-two".