142797073225 has 9 divisors (see below), whose sum is σ = 177070713717. Its totient is φ = 114236147040.

The previous prime is 142797073219. The next prime is 142797073241. The reversal of 142797073225 is 522370797241.

It is a happy number.

The square root of 142797073225 is 377885.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 25205690169 + 117591383056 = 158763^2 + 342916^2 .

It is not a de Polignac number, because 142797073225 - 2³ = 142797073217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1851637 + ... + 1927213.

Almost surely, 2^142797073225 is an apocalyptic number.

142797073225 is the 377885-th square number.

142797073225 is the 188943-rd centered octagonal number.

It is an amenable number.

142797073225 is a deficient number, since it is larger than the sum of its proper divisors (34273640492).

142797073225 is an frugal number, since it uses more digits than its factorization.

142797073225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151164 (or 75582 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 49.

Multiplying 142797073225 by its sum of digits (49), we get a square (6997056588025 = 2645195²).

The spelling of 142797073225 in words is "one hundred forty-two billion, seven hundred ninety-seven million, seventy-three thousand, two hundred twenty-five".