25951925 has 6 divisors (see below), whose sum is σ = 32180418. Its totient is φ = 20761520.

The previous prime is 25951921. The next prime is 25951931. The reversal of 25951925 is 52915952.

It can be written as a sum of positive squares in 3 ways, for example, as 2979076 + 22972849 = 1726^2 + 4793^2 .

It is not a de Polignac number, because 25951925 - 2² = 25951921 is a prime.

It is a super-2 number, since 2×25951925² = 1347004822411250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25951921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 519014 + ... + 519063.

It is an arithmetic number, because the mean of its divisors is an integer number (5363403).

Almost surely, 2^25951925 is an apocalyptic number.

25951925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25951925 is a deficient number, since it is larger than the sum of its proper divisors (6228493).

25951925 is a wasteful number, since it uses less digits than its factorization.

25951925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038087 (or 1038082 counting only the distinct ones).

The product of its digits is 40500, while the sum is 38.

The square root of 25951925 is about 5094.3031908201. The cubic root of 25951925 is about 296.0669018792.

The spelling of 25951925 in words is "twenty-five million, nine hundred fifty-one thousand, nine hundred twenty-five".