25732940 has 12 divisors (see below), whose sum is σ = 54039216. Its totient is φ = 10293168.

The previous prime is 25732921. The next prime is 25732943. The reversal of 25732940 is 4923752.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25732897 and 25732906.

It is not an unprimeable number, because it can be changed into a prime (25732943) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 643304 + ... + 643343.

It is an arithmetic number, because the mean of its divisors is an integer number (4503268).

Almost surely, 2^25732940 is an apocalyptic number.

25732940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25732940 is an abundant number, since it is smaller than the sum of its proper divisors (28306276).

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

25732940 is a wasteful number, since it uses less digits than its factorization.

25732940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286656 (or 1286654 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 25732940 is about 5072.7645322841. The cubic root of 25732940 is about 295.2318009576.

The spelling of 25732940 in words is "twenty-five million, seven hundred thirty-two thousand, nine hundred forty".