25497825 has 24 divisors (see below), whose sum is σ = 42556800. Its totient is φ = 13469760.

The previous prime is 25497821. The next prime is 25497827. The reversal of 25497825 is 52879452.

It is not a de Polignac number, because 25497825 - 2² = 25497821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25497821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6616 + ... + 9734.

It is an arithmetic number, because the mean of its divisors is an integer number (1773200).

Almost surely, 2^25497825 is an apocalyptic number.

25497825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25497825 is a deficient number, since it is larger than the sum of its proper divisors (17058975).

25497825 is a wasteful number, since it uses less digits than its factorization.

25497825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241 (or 3236 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 25497825 is about 5049.5371074981. The cubic root of 25497825 is about 294.3298971653.

The spelling of 25497825 in words is "twenty-five million, four hundred ninety-seven thousand, eight hundred twenty-five".