2525909 has 8 divisors (see below), whose sum is σ = 2588760. Its totient is φ = 2464000.

The previous prime is 2525851. The next prime is 2525933. The reversal of 2525909 is 9095252.

2525909 = T₄₆ + T₄₇ + ... + T₂₄₇.

2525909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 828100 + 1697809 = 910^2 + 1303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2525909 - 2¹⁶ = 2460373 is a prime.

It is a deceptive number, since it divides R_2525908.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8849 + ... + 9129.

It is an arithmetic number, because the mean of its divisors is an integer number (323595).

2^2525909 is an apocalyptic number.

It is an amenable number.

2525909 is a deficient number, since it is larger than the sum of its proper divisors (62851).

2525909 is a wasteful number, since it uses less digits than its factorization.

2525909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 2525909 is about 1589.3108569440. The cubic root of 2525909 is about 136.1881227321.

It can be divided in two parts, 2525 and 909, that multiplied together give a square (2295225 = 1515²).

The spelling of 2525909 in words is "two million, five hundred twenty-five thousand, nine hundred nine".