77425001 has 4 divisors (see below), whose sum is σ = 78110292. Its totient is φ = 76739712.

The previous prime is 77424967. The next prime is 77425009. The reversal of 77425001 is 10052477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10052477 = 2609 ⋅3853.

It can be written as a sum of positive squares in 2 ways, for example, as 30858025 + 46566976 = 5555^2 + 6824^2 .

It is a cyclic number.

It is not a de Polignac number, because 77425001 - 2⁶ = 77424937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77425009) 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, 342476 + ... + 342701.

It is an arithmetic number, because the mean of its divisors is an integer number (19527573).

Almost surely, 2^77425001 is an apocalyptic number.

It is an amenable number.

77425001 is a deficient number, since it is larger than the sum of its proper divisors (685291).

77425001 is a wasteful number, since it uses less digits than its factorization.

77425001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685290.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 77425001 is about 8799.1477428215. The cubic root of 77425001 is about 426.2133740456.

Adding to 77425001 its reverse (10052477), we get a palindrome (87477478).

The spelling of 77425001 in words is "seventy-seven million, four hundred twenty-five thousand, one".