77825085 has 32 divisors (see below), whose sum is σ = 134628480. Its totient is φ = 38162688.

The previous prime is 77825063. The next prime is 77825131. The reversal of 77825085 is 58052877.

It is a happy number.

It is not a de Polignac number, because 77825085 - 2¹² = 77820989 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61186 + ... + 62444.

It is an arithmetic number, because the mean of its divisors is an integer number (4207140).

Almost surely, 2^77825085 is an apocalyptic number.

It is an amenable number.

77825085 is a deficient number, since it is larger than the sum of its proper divisors (56803395).

77825085 is a wasteful number, since it uses less digits than its factorization.

77825085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 77825085 is about 8821.8526965712. The cubic root of 77825085 is about 426.9462478980.

The spelling of 77825085 in words is "seventy-seven million, eight hundred twenty-five thousand, eighty-five".