780900225 has 24 divisors (see below), whose sum is σ = 1475530560. Its totient is φ = 356982720.

The previous prime is 780900217. The next prime is 780900233. The reversal of 780900225 is 522009087.

780900225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (780900217) and next prime (780900233).

It is not a de Polignac number, because 780900225 - 2³ = 780900217 is a prime.

It is a super-2 number, since 2×780900225² = 1219610322810101250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 743190 + ... + 744239.

It is an arithmetic number, because the mean of its divisors is an integer number (61480440).

Almost surely, 2^780900225 is an apocalyptic number.

780900225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

780900225 is a deficient number, since it is larger than the sum of its proper divisors (694630335).

780900225 is a wasteful number, since it uses less digits than its factorization.

780900225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487449 (or 1487444 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 780900225 is about 27944.5920528463. The cubic root of 780900225 is about 920.8704053833.

The spelling of 780900225 in words is "seven hundred eighty million, nine hundred thousand, two hundred twenty-five".