25748825 has 6 divisors (see below), whose sum is σ = 31928574. Its totient is φ = 20599040.

The previous prime is 25748813. The next prime is 25748843. The reversal of 25748825 is 52884752.

It can be written as a sum of positive squares in 3 ways, for example, as 2785561 + 22963264 = 1669^2 + 4792^2 .

It is not a de Polignac number, because 25748825 - 2¹⁶ = 25683289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 514952 + ... + 515001.

It is an arithmetic number, because the mean of its divisors is an integer number (5321429).

Almost surely, 2^25748825 is an apocalyptic number.

25748825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25748825 is a deficient number, since it is larger than the sum of its proper divisors (6179749).

25748825 is a wasteful number, since it uses less digits than its factorization.

25748825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029963 (or 1029958 counting only the distinct ones).

The product of its digits is 179200, while the sum is 41.

The square root of 25748825 is about 5074.3300050351. The cubic root of 25748825 is about 295.2925375400.

The spelling of 25748825 in words is "twenty-five million, seven hundred forty-eight thousand, eight hundred twenty-five".