265653925 has 12 divisors (see below), whose sum is σ = 330459876. Its totient is φ = 211846400.

The previous prime is 265653907. The next prime is 265653959. The reversal of 265653925 is 529356562.

It can be written as a sum of positive squares in 6 ways, for example, as 67914081 + 197739844 = 8241^2 + 14062^2 .

It is not a de Polignac number, because 265653925 - 2⁵ = 265653893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 8836 + ... + 24685.

It is an arithmetic number, because the mean of its divisors is an integer number (27538323).

Almost surely, 2^265653925 is an apocalyptic number.

265653925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265653925 is a deficient number, since it is larger than the sum of its proper divisors (64805951).

265653925 is a wasteful number, since it uses less digits than its factorization.

265653925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33848 (or 33843 counting only the distinct ones).

The product of its digits is 486000, while the sum is 43.

The square root of 265653925 is about 16298.8933673425. The cubic root of 265653925 is about 642.8437299377.

The spelling of 265653925 in words is "two hundred sixty-five million, six hundred fifty-three thousand, nine hundred twenty-five".