25530356 has 6 divisors (see below), whose sum is σ = 44678130. Its totient is φ = 12765176.

The previous prime is 25530343. The next prime is 25530359. The reversal of 25530356 is 65303552.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20976400 + 4553956 = 4580^2 + 2134^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3191291 + ... + 3191298.

It is an arithmetic number, because the mean of its divisors is an integer number (7446355).

Almost surely, 2^25530356 is an apocalyptic number.

It is an amenable number.

25530356 is a deficient number, since it is larger than the sum of its proper divisors (19147774).

25530356 is a wasteful number, since it uses less digits than its factorization.

25530356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6382593 (or 6382591 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 25530356 is about 5052.7572670771. The cubic root of 25530356 is about 294.4550160307.

The spelling of 25530356 in words is "twenty-five million, five hundred thirty thousand, three hundred fifty-six".