78201493725 has 12 divisors (see below), whose sum is σ = 129293136416. Its totient is φ = 41707463280.

The previous prime is 78201493681. The next prime is 78201493753. The reversal of 78201493725 is 52739410287.

It is a happy number.

It is not a de Polignac number, because 78201493725 - 2⁶ = 78201493661 is a prime.

It is a super-2 number, since 2×78201493725² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 521343217 + ... + 521343366.

Almost surely, 2^78201493725 is an apocalyptic number.

78201493725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78201493725 is a deficient number, since it is larger than the sum of its proper divisors (51091642691).

78201493725 is a wasteful number, since it uses less digits than its factorization.

78201493725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042686596 (or 1042686591 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 78201493725 in words is "seventy-eight billion, two hundred one million, four hundred ninety-three thousand, seven hundred twenty-five".