74256525 has 36 divisors (see below), whose sum is σ = 152005152. Its totient is φ = 33945120.

The previous prime is 74256509. The next prime is 74256529. The reversal of 74256525 is 52565247.

74256525 is a `hidden beast` number, since 74 + 2 + 565 + 25 = 666.

It is not a de Polignac number, because 74256525 - 2⁴ = 74256509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74256525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74256529) 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 35 ways as a sum of consecutive naturals, for example, 21999 + ... + 25148.

Almost surely, 2^74256525 is an apocalyptic number.

74256525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

74256525 is an abundant number, since it is smaller than the sum of its proper divisors (77748627).

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

74256525 is a wasteful number, since it uses less digits than its factorization.

74256525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47170 (or 47162 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 74256525 is about 8617.2225803910. Note that the first 3 decimals coincide. The cubic root of 74256525 is about 420.3182112287.

The spelling of 74256525 in words is "seventy-four million, two hundred fifty-six thousand, five hundred twenty-five".