25730132 has 6 divisors (see below), whose sum is σ = 45027738. Its totient is φ = 12865064.

The previous prime is 25730099. The next prime is 25730137. The reversal of 25730132 is 23103752.

It can be written as a sum of positive squares in only one way, i.e., 21864976 + 3865156 = 4676^2 + 1966^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25730098 and 25730107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25730137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216263 + ... + 3216270.

It is an arithmetic number, because the mean of its divisors is an integer number (7504623).

Almost surely, 2^25730132 is an apocalyptic number.

It is an amenable number.

25730132 is a deficient number, since it is larger than the sum of its proper divisors (19297606).

25730132 is a wasteful number, since it uses less digits than its factorization.

25730132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6432537 (or 6432535 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 25730132 is about 5072.4877525727. The cubic root of 25730132 is about 295.2210619197.

Adding to 25730132 its reverse (23103752), we get a palindrome (48833884).

The spelling of 25730132 in words is "twenty-five million, seven hundred thirty thousand, one hundred thirty-two".