77402125 has 16 divisors (see below), whose sum is σ = 97022016. Its totient is φ = 61650000.

The previous prime is 77402111. The next prime is 77402161. The reversal of 77402125 is 52120477.

It is not a de Polignac number, because 77402125 - 2⁵ = 77402093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77402093 and 77402102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30142 + ... + 32608.

It is an arithmetic number, because the mean of its divisors is an integer number (6063876).

Almost surely, 2^77402125 is an apocalyptic number.

It is an amenable number.

77402125 is a deficient number, since it is larger than the sum of its proper divisors (19619891).

77402125 is a wasteful number, since it uses less digits than its factorization.

77402125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 77402125 is about 8797.8477481711. The cubic root of 77402125 is about 426.1713935594.

The spelling of 77402125 in words is "seventy-seven million, four hundred two thousand, one hundred twenty-five".