25231146 has 8 divisors (see below), whose sum is σ = 50462304. Its totient is φ = 8410380.

The previous prime is 25231121. The next prime is 25231147. The reversal of 25231146 is 64113252.

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

25231146 is an admirable number.

It is a super-2 number, since 2×25231146² = 1273221456946632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25231147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102590 + ... + 2102601.

It is an arithmetic number, because the mean of its divisors is an integer number (6307788).

Almost surely, 2^25231146 is an apocalyptic number.

25231146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25231146 is a wasteful number, since it uses less digits than its factorization.

25231146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205196.

The product of its digits is 1440, while the sum is 24.

The square root of 25231146 is about 5023.0614171041. The cubic root of 25231146 is about 293.3001773245.

Adding to 25231146 its reverse (64113252), we get a palindrome (89344398).

The spelling of 25231146 in words is "twenty-five million, two hundred thirty-one thousand, one hundred forty-six".