2609725 has 12 divisors (see below), whose sum is σ = 3263680. Its totient is φ = 2070000.

The previous prime is 2609701. The next prime is 2609731. The reversal of 2609725 is 5279062.

It is not a de Polignac number, because 2609725 - 2⁵ = 2609693 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3100 + ... + 3850.

2^2609725 is an apocalyptic number.

2609725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2609725 is a deficient number, since it is larger than the sum of its proper divisors (653955).

2609725 is a wasteful number, since it uses less digits than its factorization.

2609725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 2609725 is about 1615.4643295350. The cubic root of 2609725 is about 137.6781162776.

The spelling of 2609725 in words is "two million, six hundred nine thousand, seven hundred twenty-five".