147220425 has 72 divisors (see below), whose sum is σ = 304668000. Its totient is φ = 67161600.

The previous prime is 147220421. The next prime is 147220427. The reversal of 147220425 is 524022741.

147220425 is a `hidden beast` number, since 14 + 7 + 220 + 425 = 666.

147220425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 147220425 - 2² = 147220421 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (147220421) 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, 40326 + ... + 43824.

It is an arithmetic number, because the mean of its divisors is an integer number (4231500).

Almost surely, 2^147220425 is an apocalyptic number.

147220425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

147220425 is an abundant number, since it is smaller than the sum of its proper divisors (157447575).

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

147220425 is a wasteful number, since it uses less digits than its factorization.

147220425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543 (or 3535 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 147220425 is about 12133.4424216708. The cubic root of 147220425 is about 528.0268688978.

The spelling of 147220425 in words is "one hundred forty-seven million, two hundred twenty thousand, four hundred twenty-five".