77425841 has 4 divisors (see below), whose sum is σ = 77767152. Its totient is φ = 77084532.

The previous prime is 77425819. The next prime is 77425849. The reversal of 77425841 is 14852477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14852477 = 1601 ⋅9277.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77425841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77425795 and 77425804.

It is not an unprimeable number, because it can be changed into a prime (77425849) 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, 170315 + ... + 170768.

It is an arithmetic number, because the mean of its divisors is an integer number (19441788).

Almost surely, 2^77425841 is an apocalyptic number.

It is an amenable number.

77425841 is a deficient number, since it is larger than the sum of its proper divisors (341311).

77425841 is a wasteful number, since it uses less digits than its factorization.

77425841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341310.

The product of its digits is 62720, while the sum is 38.

The square root of 77425841 is about 8799.1954745874. The cubic root of 77425841 is about 426.2149153993.

The spelling of 77425841 in words is "seventy-seven million, four hundred twenty-five thousand, eight hundred forty-one".