142220625 has 40 divisors (see below), whose sum is σ = 239623296. Its totient is φ = 75000000.

The previous prime is 142220609. The next prime is 142220629. The reversal of 142220625 is 526022241.

It is a happy number.

It is not a de Polignac number, because 142220625 - 2⁴ = 142220609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142220595 and 142220604.

It is not an unprimeable number, because it can be changed into a prime (142220629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 189000 + ... + 189750.

Almost surely, 2^142220625 is an apocalyptic number.

142220625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142220625 is a deficient number, since it is larger than the sum of its proper divisors (97402671).

142220625 is an equidigital number, since it uses as much as digits as its factorization.

142220625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 142220625 is about 11925.6289142334. The cubic root of 142220625 is about 521.9803981130.

Adding to 142220625 its product of nonzero digits (1920), we get a triangular number (142222545 = T₁₆₈₆₅).

Adding to 142220625 its reverse (526022241), we get a palindrome (668242866).

It can be divided in two parts, 142220 and 625, that added together give a triangular number (142845 = T₅₃₄).

The spelling of 142220625 in words is "one hundred forty-two million, two hundred twenty thousand, six hundred twenty-five".