25530785 has 8 divisors (see below), whose sum is σ = 35013696. Its totient is φ = 17506800.

The previous prime is 25530781. The next prime is 25530797. The reversal of 25530785 is 58703552.

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

It is not a de Polignac number, because 25530785 - 2² = 25530781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 729451 = 25530785 / (2 + 5 + 5 + 3 + 0 + 7 + 8 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25530781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364691 + ... + 364760.

It is an arithmetic number, because the mean of its divisors is an integer number (4376712).

Almost surely, 2^25530785 is an apocalyptic number.

It is an amenable number.

25530785 is a deficient number, since it is larger than the sum of its proper divisors (9482911).

25530785 is an equidigital number, since it uses as much as digits as its factorization.

25530785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729463.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 25530785 is about 5052.7997189677. The cubic root of 25530785 is about 294.4566653156.

The spelling of 25530785 in words is "twenty-five million, five hundred thirty thousand, seven hundred eighty-five".