78383290225 has 12 divisors (see below), whose sum is σ = 97631140096. Its totient is φ = 62425432080.

The previous prime is 78383290217. The next prime is 78383290241. The reversal of 78383290225 is 52209238387.

It is a happy number.

It is not a de Polignac number, because 78383290225 - 2³ = 78383290217 is a prime.

It is a super-2 number, since 2×78383290225² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7024317 + ... + 7035466.

Almost surely, 2^78383290225 is an apocalyptic number.

It is an amenable number.

78383290225 is a deficient number, since it is larger than the sum of its proper divisors (19247849871).

78383290225 is a wasteful number, since it uses less digits than its factorization.

78383290225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14060016 (or 14060011 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 78383290225 in words is "seventy-eight billion, three hundred eighty-three million, two hundred ninety thousand, two hundred twenty-five".