8725557 has 4 divisors (see below), whose sum is σ = 11634080. Its totient is φ = 5817036.

The previous prime is 8725547. The next prime is 8725567. The reversal of 8725557 is 7555278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (8725547) and next prime (8725567).

It is not a de Polignac number, because 8725557 - 2⁷ = 8725429 is a prime.

It is a super-2 number, since 2×8725557² = 152270689920498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8725547) 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, 1454257 + ... + 1454262.

It is an arithmetic number, because the mean of its divisors is an integer number (2908520).

Almost surely, 2^8725557 is an apocalyptic number.

It is an amenable number.

8725557 is a deficient number, since it is larger than the sum of its proper divisors (2908523).

8725557 is a wasteful number, since it uses less digits than its factorization.

8725557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908522.

The product of its digits is 98000, while the sum is 39.

The square root of 8725557 is about 2953.9053810168. The cubic root of 8725557 is about 205.8722068485.

The spelling of 8725557 in words is "eight million, seven hundred twenty-five thousand, five hundred fifty-seven".