77006025 has 24 divisors (see below), whose sum is σ = 141464160. Its totient is φ = 41069520.

The previous prime is 77006023. The next prime is 77006057. The reversal of 77006025 is 52060077.

It is not a de Polignac number, because 77006025 - 2¹ = 77006023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 77006025.

It is not an unprimeable number, because it can be changed into a prime (77006023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56367 + ... + 57716.

It is an arithmetic number, because the mean of its divisors is an integer number (5894340).

Almost surely, 2^77006025 is an apocalyptic number.

77006025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77006025 is a deficient number, since it is larger than the sum of its proper divisors (64458135).

77006025 is a wasteful number, since it uses less digits than its factorization.

77006025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114102 (or 114091 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 77006025 is about 8775.3076869133. The cubic root of 77006025 is about 425.4431824486.

The spelling of 77006025 in words is "seventy-seven million, six thousand, twenty-five".