25490146 has 8 divisors (see below), whose sum is σ = 41711184. Its totient is φ = 11586420.

The previous prime is 25490081. The next prime is 25490149. The reversal of 25490146 is 64109452.

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

It is not an unprimeable number, because it can be changed into a prime (25490149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579300 + ... + 579343.

It is an arithmetic number, because the mean of its divisors is an integer number (5213898).

Almost surely, 2^25490146 is an apocalyptic number.

25490146 is a deficient number, since it is larger than the sum of its proper divisors (16221038).

25490146 is a wasteful number, since it uses less digits than its factorization.

25490146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158656.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 25490146 is about 5048.7766835145. The cubic root of 25490146 is about 294.3003471127.

Adding to 25490146 its reverse (64109452), we get a palindrome (89599598).

The spelling of 25490146 in words is "twenty-five million, four hundred ninety thousand, one hundred forty-six".