25415145 has 24 divisors (see below), whose sum is σ = 50346816. Its totient is φ = 11618208.

The previous prime is 25415129. The next prime is 25415149. The reversal of 25415145 is 54151452.

It is not a de Polignac number, because 25415145 - 2⁴ = 25415129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25415149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40027 + ... + 40656.

It is an arithmetic number, because the mean of its divisors is an integer number (2097784).

Almost surely, 2^25415145 is an apocalyptic number.

It is an amenable number.

25415145 is a deficient number, since it is larger than the sum of its proper divisors (24931671).

25415145 is a wasteful number, since it uses less digits than its factorization.

25415145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80701 (or 80698 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 25415145 is about 5041.3435709144. The cubic root of 25415145 is about 294.0114184098.

Adding to 25415145 its reverse (54151452), we get a palindrome (79566597).

The spelling of 25415145 in words is "twenty-five million, four hundred fifteen thousand, one hundred forty-five".