25020146 has 8 divisors (see below), whose sum is σ = 37635840. Its totient is φ = 12474868.

The previous prime is 25020133. The next prime is 25020157. The reversal of 25020146 is 64102052.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25020146² = 1252015411722632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16706 + ... + 18141.

It is an arithmetic number, because the mean of its divisors is an integer number (4704480).

Almost surely, 2^25020146 is an apocalyptic number.

25020146 is a deficient number, since it is larger than the sum of its proper divisors (12615694).

25020146 is a wasteful number, since it uses less digits than its factorization.

25020146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35208.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 25020146 is about 5002.0141943021. The cubic root of 25020146 is about 292.4802957482.

Adding to 25020146 its reverse (64102052), we get a palindrome (89122198).

The spelling of 25020146 in words is "twenty-five million, twenty thousand, one hundred forty-six".