142661625 has 32 divisors (see below), whose sum is σ = 238163328. Its totient is φ = 75838400.

The previous prime is 142661621. The next prime is 142661641. The reversal of 142661625 is 526166241.

142661625 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 142661625 - 2² = 142661621 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142661621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208534 + ... + 209216.

It is an arithmetic number, because the mean of its divisors is an integer number (7442604).

Almost surely, 2^142661625 is an apocalyptic number.

142661625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142661625 is a deficient number, since it is larger than the sum of its proper divisors (95501703).

142661625 is an equidigital number, since it uses as much as digits as its factorization.

142661625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258 (or 1248 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 142661625 is about 11944.1041941202. The cubic root of 142661625 is about 522.5193631553.

The spelling of 142661625 in words is "one hundred forty-two million, six hundred sixty-one thousand, six hundred twenty-five".