74125682437 has 4 divisors (see below), whose sum is σ = 78486016716. Its totient is φ = 69765348160.

The previous prime is 74125682431. The next prime is 74125682479. The reversal of 74125682437 is 73428652147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73428652147 = 182617 ⋅402091.

It can be written as a sum of positive squares in 2 ways, for example, as 29666273121 + 44459409316 = 172239^2 + 210854^2 .

It is a cyclic number.

It is not a de Polignac number, because 74125682437 - 2²⁷ = 73991464709 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 (74125682431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180167114 + ... + 2180167147.

It is an arithmetic number, because the mean of its divisors is an integer number (19621504179).

Almost surely, 2^74125682437 is an apocalyptic number.

It is an amenable number.

74125682437 is a deficient number, since it is larger than the sum of its proper divisors (4360334279).

74125682437 is a wasteful number, since it uses less digits than its factorization.

74125682437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360334278.

The product of its digits is 2257920, while the sum is 49.

The spelling of 74125682437 in words is "seventy-four billion, one hundred twenty-five million, six hundred eighty-two thousand, four hundred thirty-seven".