7478478825 has 24 divisors (see below), whose sum is σ = 12381945600. Its totient is φ = 3982868160.

The previous prime is 7478478803. The next prime is 7478478827. The reversal of 7478478825 is 5288748747.

It is not a de Polignac number, because 7478478825 - 2¹⁰ = 7478477801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7478478827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17145 + ... + 123494.

It is an arithmetic number, because the mean of its divisors is an integer number (515914400).

Almost surely, 2^7478478825 is an apocalyptic number.

7478478825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7478478825 is a deficient number, since it is larger than the sum of its proper divisors (4903466775).

7478478825 is a wasteful number, since it uses less digits than its factorization.

7478478825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141361 (or 141356 counting only the distinct ones).

The product of its digits is 28098560, while the sum is 60.

The square root of 7478478825 is about 86478.1985531614. The cubic root of 7478478825 is about 1955.5597479709.

The spelling of 7478478825 in words is "seven billion, four hundred seventy-eight million, four hundred seventy-eight thousand, eight hundred twenty-five".