240689425 has 12 divisors (see below), whose sum is σ = 308083456. Its totient is φ = 186339600.

The previous prime is 240689399. The next prime is 240689429. The reversal of 240689425 is 524986042.

It is not a de Polignac number, because 240689425 - 2⁷ = 240689297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240689429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154509 + ... + 156058.

Almost surely, 2^240689425 is an apocalyptic number.

240689425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

240689425 is a deficient number, since it is larger than the sum of its proper divisors (67394031).

240689425 is a wasteful number, since it uses less digits than its factorization.

240689425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310608 (or 310603 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 240689425 is about 15514.1685242877. The cubic root of 240689425 is about 622.0409889139.

The spelling of 240689425 in words is "two hundred forty million, six hundred eighty-nine thousand, four hundred twenty-five".