15825055 has 4 divisors (see below), whose sum is σ = 18990072. Its totient is φ = 12660040.

The previous prime is 15825049. The next prime is 15825059. The reversal of 15825055 is 55052851.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15825055 - 2¹⁷ = 15693983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15825059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582501 + ... + 1582510.

It is an arithmetic number, because the mean of its divisors is an integer number (4747518).

Almost surely, 2^15825055 is an apocalyptic number.

15825055 is a deficient number, since it is larger than the sum of its proper divisors (3165017).

15825055 is an equidigital number, since it uses as much as digits as its factorization.

15825055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165016.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 15825055 is about 3978.0717690861. The cubic root of 15825055 is about 251.0624385017.

The spelling of 15825055 in words is "fifteen million, eight hundred twenty-five thousand, fifty-five".