100142025 has 24 divisors (see below), whose sum is σ = 165938784. Its totient is φ = 53289600.

The previous prime is 100142011. The next prime is 100142047. The reversal of 100142025 is 520241001.

It is not a de Polignac number, because 100142025 - 2⁶ = 100141961 is a prime.

It is a super-2 number, since 2×100142025² = 20056850342201250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 100141995 and 100142013.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39805 + ... + 42245.

It is an arithmetic number, because the mean of its divisors is an integer number (6914116).

Almost surely, 2^100142025 is an apocalyptic number.

100142025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100142025 is a deficient number, since it is larger than the sum of its proper divisors (65796759).

100142025 is a wasteful number, since it uses less digits than its factorization.

100142025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001 (or 2996 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 100142025 is about 10007.0987304013. The cubic root of 100142025 is about 464.3785199658.

Adding to 100142025 its reverse (520241001), we get a palindrome (620383026).

The spelling of 100142025 in words is "one hundred million, one hundred forty-two thousand, twenty-five".