74125657 has 4 divisors (see below), whose sum is σ = 74160436. Its totient is φ = 74090880.

The previous prime is 74125607. The next prime is 74125673. The reversal of 74125657 is 75652147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75652147 = 53 ⋅1427399.

It can be written as a sum of positive squares in 2 ways, for example, as 53231616 + 20894041 = 7296^2 + 4571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74125657 is a prime.

It is a super-2 number, since 2×74125657² = 10989226051363298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74125607) 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, 13968 + ... + 18529.

It is an arithmetic number, because the mean of its divisors is an integer number (18540109).

Almost surely, 2^74125657 is an apocalyptic number.

It is an amenable number.

74125657 is a deficient number, since it is larger than the sum of its proper divisors (34779).

74125657 is a wasteful number, since it uses less digits than its factorization.

74125657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34778.

The product of its digits is 58800, while the sum is 37.

The square root of 74125657 is about 8609.6258339140. The cubic root of 74125657 is about 420.0711462997.

The spelling of 74125657 in words is "seventy-four million, one hundred twenty-five thousand, six hundred fifty-seven".