76782225 has 48 divisors (see below), whose sum is σ = 139060544. Its totient is φ = 37152000.

The previous prime is 76782197. The next prime is 76782241. The reversal of 76782225 is 52228767.

It is not a de Polignac number, because 76782225 - 2¹² = 76778129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58830 + ... + 60120.

Almost surely, 2^76782225 is an apocalyptic number.

76782225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

76782225 is a deficient number, since it is larger than the sum of its proper divisors (62278319).

76782225 is a wasteful number, since it uses less digits than its factorization.

76782225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378 (or 1373 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 76782225 is about 8762.5467188484. The cubic root of 76782225 is about 425.0306321635.

The spelling of 76782225 in words is "seventy-six million, seven hundred eighty-two thousand, two hundred twenty-five".