8725040 has 20 divisors (see below), whose sum is σ = 20285904. Its totient is φ = 3489984.

The previous prime is 8725039. The next prime is 8725051. The reversal of 8725040 is 405278.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×8725040² = 152252646003200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54452 + ... + 54611.

Almost surely, 2^8725040 is an apocalyptic number.

8725040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8725040 is an abundant number, since it is smaller than the sum of its proper divisors (11560864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8725040 is a wasteful number, since it uses less digits than its factorization.

8725040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109076 (or 109070 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 8725040 is about 2953.8178684543. The cubic root of 8725040 is about 205.8681407076.

The spelling of 8725040 in words is "eight million, seven hundred twenty-five thousand, forty".