146745225 has 72 divisors (see below), whose sum is σ = 289115424. Its totient is φ = 70560000.

The previous prime is 146745217. The next prime is 146745229. The reversal of 146745225 is 522547641.

It is a happy number.

It is not a de Polignac number, because 146745225 - 2³ = 146745217 is a prime.

It is a super-2 number, since 2×146745225² = 43068322120601250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 146745225.

It is not an unprimeable number, because it can be changed into a prime (146745229) 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, 522085 + ... + 522365.

It is an arithmetic number, because the mean of its divisors is an integer number (4015492).

Almost surely, 2^146745225 is an apocalyptic number.

146745225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

146745225 is a deficient number, since it is larger than the sum of its proper divisors (142370199).

146745225 is a wasteful number, since it uses less digits than its factorization.

146745225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 511 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 146745225 is about 12113.8443526405. The cubic root of 146745225 is about 527.4581325381.

The spelling of 146745225 in words is "one hundred forty-six million, seven hundred forty-five thousand, two hundred twenty-five".