77201225 has 12 divisors (see below), whose sum is σ = 99892416. Its totient is φ = 59075280.

The previous prime is 77201197. The next prime is 77201227. The reversal of 77201225 is 52210277.

It is not a de Polignac number, because 77201225 - 2¹² = 77197129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77201194 and 77201203.

It is not an unprimeable number, because it can be changed into a prime (77201227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66557 + ... + 67706.

It is an arithmetic number, because the mean of its divisors is an integer number (8324368).

Almost surely, 2^77201225 is an apocalyptic number.

It is an amenable number.

77201225 is a deficient number, since it is larger than the sum of its proper divisors (22691191).

77201225 is a wasteful number, since it uses less digits than its factorization.

77201225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134296 (or 134291 counting only the distinct ones).

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

The square root of 77201225 is about 8786.4227646978. The cubic root of 77201225 is about 425.8023597002.

The spelling of 77201225 in words is "seventy-seven million, two hundred one thousand, two hundred twenty-five".