1478869825 has 6 divisors (see below), whose sum is σ = 1833798614. Its totient is φ = 1183095840.

The previous prime is 1478869813. The next prime is 1478869829. The reversal of 1478869825 is 5289688741.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 268664881 + 1210204944 = 16391^2 + 34788^2 .

It is not a de Polignac number, because 1478869825 - 2⁵ = 1478869793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1478869825.

It is not an unprimeable number, because it can be changed into a prime (1478869829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29577372 + ... + 29577421.

Almost surely, 2^1478869825 is an apocalyptic number.

It is an amenable number.

1478869825 is a deficient number, since it is larger than the sum of its proper divisors (354928789).

1478869825 is an equidigital number, since it uses as much as digits as its factorization.

1478869825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59154803 (or 59154798 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 58.

The square root of 1478869825 is about 38456.0765679496. The cubic root of 1478869825 is about 1139.3136899635.

The spelling of 1478869825 in words is "one billion, four hundred seventy-eight million, eight hundred sixty-nine thousand, eight hundred twenty-five".