78233025 has 24 divisors (see below), whose sum is σ = 139296640. Its totient is φ = 38514240.

The previous prime is 78233021. The next prime is 78233081. The reversal of 78233025 is 52033287.

It is not a de Polignac number, because 78233025 - 2² = 78233021 is a prime.

It is a super-2 number, since 2×78233025² = 12240812401301250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78232983 and 78233001.

It is not an unprimeable number, because it can be changed into a prime (78233021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39145 + ... + 41094.

Almost surely, 2^78233025 is an apocalyptic number.

78233025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78233025 is a deficient number, since it is larger than the sum of its proper divisors (61063615).

78233025 is a wasteful number, since it uses less digits than its factorization.

78233025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80265 (or 80260 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 78233025 is about 8844.9434707069. The cubic root of 78233025 is about 427.6909307526.

The spelling of 78233025 in words is "seventy-eight million, two hundred thirty-three thousand, twenty-five".