142217025 has 12 divisors (see below), whose sum is σ = 235132272. Its totient is φ = 75849040.

The previous prime is 142217021. The next prime is 142217059. The reversal of 142217025 is 520712241.

It is not a de Polignac number, because 142217025 - 2² = 142217021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142216986 and 142217004.

It is not an unprimeable number, because it can be changed into a prime (142217021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 948039 + ... + 948188.

It is an arithmetic number, because the mean of its divisors is an integer number (19594356).

Almost surely, 2^142217025 is an apocalyptic number.

142217025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142217025 is a deficient number, since it is larger than the sum of its proper divisors (92915247).

142217025 is a wasteful number, since it uses less digits than its factorization.

142217025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896240 (or 1896235 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 142217025 is about 11925.4779778422. The cubic root of 142217025 is about 521.9759938168.

Adding to 142217025 its reverse (520712241), we get a palindrome (662929266).

The spelling of 142217025 in words is "one hundred forty-two million, two hundred seventeen thousand, twenty-five".