78412485 has 16 divisors (see below), whose sum is σ = 129507840. Its totient is φ = 40470720.

The previous prime is 78412441. The next prime is 78412519. The reversal of 78412485 is 58421487.

It is a happy number.

It is not a de Polignac number, because 78412485 - 2²¹ = 76315333 is a prime.

It is a super-2 number, since 2×78412485² = 12297035607750450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83850 + ... + 84779.

It is an arithmetic number, because the mean of its divisors is an integer number (8094240).

Almost surely, 2^78412485 is an apocalyptic number.

It is an amenable number.

78412485 is a deficient number, since it is larger than the sum of its proper divisors (51095355).

78412485 is a wasteful number, since it uses less digits than its factorization.

78412485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168668.

The product of its digits is 71680, while the sum is 39.

The square root of 78412485 is about 8855.0824389161. The cubic root of 78412485 is about 428.0177100571.

The spelling of 78412485 in words is "seventy-eight million, four hundred twelve thousand, four hundred eighty-five".