25732980 has 144 divisors (see below), whose sum is σ = 96130944. Its totient is φ = 5425920.

The previous prime is 25732979. The next prime is 25732981. The reversal of 25732980 is 8923752.

It is a happy number.

25732980 is a `hidden beast` number, since 2 + 573 + 2 + 9 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (25732979) and next prime (25732981).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25732981) 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, 15595 + ... + 17165.

It is an arithmetic number, because the mean of its divisors is an integer number (667576).

Almost surely, 2^25732980 is an apocalyptic number.

25732980 is a gapful number since it is divisible by the number (20) 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 25732980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48065472).

25732980 is an abundant number, since it is smaller than the sum of its proper divisors (70397964).

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

25732980 is a wasteful number, since it uses less digits than its factorization.

25732980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606 (or 1601 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 25732980 is about 5072.7684749060. The cubic root of 25732980 is about 295.2319539297.

The spelling of 25732980 in words is "twenty-five million, seven hundred thirty-two thousand, nine hundred eighty".