69249825 has 36 divisors (see below), whose sum is σ = 128323260. Its totient is φ = 35656320.

The previous prime is 69249821. The next prime is 69249827. The reversal of 69249825 is 52894296.

It can be written as a sum of positive squares in 6 ways, for example, as 4028049 + 65221776 = 2007^2 + 8076^2 .

It is not a de Polignac number, because 69249825 - 2² = 69249821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (69249821) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1219 + ... + 11831.

It is an arithmetic number, because the mean of its divisors is an integer number (3564535).

Almost surely, 2^69249825 is an apocalyptic number.

It is an amenable number.

69249825 is a deficient number, since it is larger than the sum of its proper divisors (59073435).

69249825 is a wasteful number, since it uses less digits than its factorization.

69249825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10658 (or 10650 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 69249825 is about 8321.6479738090. The cubic root of 69249825 is about 410.6510082009.

The spelling of 69249825 in words is "sixty-nine million, two hundred forty-nine thousand, eight hundred twenty-five".