78194025 has 192 divisors, whose sum is σ = 188876800. Its totient is φ = 30792960.

The previous prime is 78193993. The next prime is 78194029. The reversal of 78194025 is 52049187.

It is not a de Polignac number, because 78194025 - 2⁵ = 78193993 is a prime.

It is a super-2 number, since 2×78194025² = 12228611091401250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78194029) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1167042 + ... + 1167108.

Almost surely, 2^78194025 is an apocalyptic number.

78194025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78194025 is an abundant number, since it is smaller than the sum of its proper divisors (110682775).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78194025 is a wasteful number, since it uses less digits than its factorization.

78194025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 78194025 is about 8842.7385464007. The cubic root of 78194025 is about 427.6198494381.

The spelling of 78194025 in words is "seventy-eight million, one hundred ninety-four thousand, twenty-five".