74290725 has 36 divisors (see below), whose sum is σ = 137368192. Its totient is φ = 38340000.

The previous prime is 74290717. The next prime is 74290751. The reversal of 74290725 is 52709247.

It is not a de Polignac number, because 74290725 - 2³ = 74290717 is a prime.

It is a super-2 number, since 2×74290725² = 11038223642051250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74290725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1650 + ... + 12300.

Almost surely, 2^74290725 is an apocalyptic number.

74290725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

74290725 is a deficient number, since it is larger than the sum of its proper divisors (63077467).

74290725 is a wasteful number, since it uses less digits than its factorization.

74290725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10698 (or 10690 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 74290725 is about 8619.2067500438. The cubic root of 74290725 is about 420.3827293593.

The spelling of 74290725 in words is "seventy-four million, two hundred ninety thousand, seven hundred twenty-five".