78280025325 has 12 divisors (see below), whose sum is σ = 129422975328. Its totient is φ = 41749346800.

The previous prime is 78280025309. The next prime is 78280025359. The reversal of 78280025325 is 52352008287.

It is not a de Polignac number, because 78280025325 - 2⁴ = 78280025309 is a prime.

It is a super-2 number, since 2×78280025325² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent 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, 521866761 + ... + 521866910.

It is an arithmetic number, because the mean of its divisors is an integer number (10785247944).

Almost surely, 2^78280025325 is an apocalyptic number.

78280025325 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78280025325 is a deficient number, since it is larger than the sum of its proper divisors (51142950003).

78280025325 is a wasteful number, since it uses less digits than its factorization.

78280025325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043733684 (or 1043733679 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 78280025325 in words is "seventy-eight billion, two hundred eighty million, twenty-five thousand, three hundred twenty-five".