147638825 has 6 divisors (see below), whose sum is σ = 183072174. Its totient is φ = 118111040.

The previous prime is 147638791. The next prime is 147638831. The reversal of 147638825 is 528836741.

It can be written as a sum of positive squares in 3 ways, for example, as 1784896 + 145853929 = 1336^2 + 12077^2 .

It is not a de Polignac number, because 147638825 - 2¹⁸ = 147376681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2952752 + ... + 2952801.

It is an arithmetic number, because the mean of its divisors is an integer number (30512029).

Almost surely, 2^147638825 is an apocalyptic number.

It is an amenable number.

147638825 is a deficient number, since it is larger than the sum of its proper divisors (35433349).

147638825 is an equidigital number, since it uses as much as digits as its factorization.

147638825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5905563 (or 5905558 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 147638825 is about 12150.6717921274. The cubic root of 147638825 is about 528.5266126913.

The spelling of 147638825 in words is "one hundred forty-seven million, six hundred thirty-eight thousand, eight hundred twenty-five".