10725309 has 12 divisors (see below), whose sum is σ = 17705376. Its totient is φ = 6128712.

The previous prime is 10725307. The next prime is 10725371. The reversal of 10725309 is 90352701.

It is not a de Polignac number, because 10725309 - 2¹ = 10725307 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10725307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85059 + ... + 85184.

It is an arithmetic number, because the mean of its divisors is an integer number (1475448).

Almost surely, 2^10725309 is an apocalyptic number.

It is an amenable number.

10725309 is a deficient number, since it is larger than the sum of its proper divisors (6980067).

10725309 is a wasteful number, since it uses less digits than its factorization.

10725309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170256 (or 170253 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 10725309 is about 3274.9517553698. The cubic root of 10725309 is about 220.5311477433.

It can be divided in two parts, 10725 and 309, that multiplied together give a triangular number (3314025 = T₂₅₇₄).

The spelling of 10725309 in words is "ten million, seven hundred twenty-five thousand, three hundred nine".