25523000 has 32 divisors (see below), whose sum is σ = 59726160. Its totient is φ = 10208800.

The previous prime is 25522979. The next prime is 25523011. The reversal of 25523000 is 32552.

It is a self number, because there is not a number n which added to its sum of digits gives 25523000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11762 + ... + 13761.

Almost surely, 2^25523000 is an apocalyptic number.

25523000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25523000 is an abundant number, since it is smaller than the sum of its proper divisors (34203160).

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

25523000 is a wasteful number, since it uses less digits than its factorization.

25523000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25544 (or 25530 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 25523000 is about 5052.0292952436. The cubic root of 25523000 is about 294.4267331092.

Adding to 25523000 its reverse (32552), we get a palindrome (25555552).

The spelling of 25523000 in words is "twenty-five million, five hundred twenty-three thousand".