74240525 has 12 divisors (see below), whose sum is σ = 92226612. Its totient is φ = 59283840.

The previous prime is 74240521. The next prime is 74240531. The reversal of 74240525 is 52504247.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 7295401 + 66945124 = 2701^2 + 8182^2 .

It is not a de Polignac number, because 74240525 - 2² = 74240521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74240521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13019 + ... + 17831.

It is an arithmetic number, because the mean of its divisors is an integer number (7685551).

Almost surely, 2^74240525 is an apocalyptic number.

It is an amenable number.

74240525 is a deficient number, since it is larger than the sum of its proper divisors (17986087).

74240525 is a wasteful number, since it uses less digits than its factorization.

74240525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440 (or 5435 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 74240525 is about 8616.2941570028. The cubic root of 74240525 is about 420.2880205060.

The spelling of 74240525 in words is "seventy-four million, two hundred forty thousand, five hundred twenty-five".