4778460225 has 72 divisors (see below), whose sum is σ = 10670692032. Its totient is φ = 1985846400.

The previous prime is 4778460223. The next prime is 4778460227. The reversal of 4778460225 is 5220648774.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4778460223) and next prime (4778460227).

It is not a de Polignac number, because 4778460225 - 2¹ = 4778460223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (4778460221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 120582 + ... + 155231.

It is an arithmetic number, because the mean of its divisors is an integer number (148204056).

Almost surely, 2^4778460225 is an apocalyptic number.

4778460225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4778460225 is an abundant number, since it is smaller than the sum of its proper divisors (5892231807).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4778460225 is a wasteful number, since it uses less digits than its factorization.

4778460225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275847 (or 275839 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The square root of 4778460225 is about 69126.4075806055. The cubic root of 4778460225 is about 1684.3383038211.

The spelling of 4778460225 in words is "four billion, seven hundred seventy-eight million, four hundred sixty thousand, two hundred twenty-five".