78498535425 has 48 divisors (see below), whose sum is σ = 134822620800. Its totient is φ = 40269376000.

The previous prime is 78498535417. The next prime is 78498535433. The reversal of 78498535425 is 52453589487.

It is an interprime number because it is at equal distance from previous prime (78498535417) and next prime (78498535433).

It is not a de Polignac number, because 78498535425 - 2³ = 78498535417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38551 + ... + 398099.

It is an arithmetic number, because the mean of its divisors is an integer number (2808804600).

Almost surely, 2^78498535425 is an apocalyptic number.

78498535425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78498535425 is a deficient number, since it is larger than the sum of its proper divisors (56324085375).

78498535425 is a wasteful number, since it uses less digits than its factorization.

78498535425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359674 (or 359669 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 60.

The spelling of 78498535425 in words is "seventy-eight billion, four hundred ninety-eight million, five hundred thirty-five thousand, four hundred twenty-five".