25401441 has 16 divisors (see below), whose sum is σ = 36598464. Its totient is φ = 15578304.

The previous prime is 25401391. The next prime is 25401443. The reversal of 25401441 is 14410452.

It is a happy number.

It is not a de Polignac number, because 25401441 - 2¹¹ = 25399393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25401443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12595 + ... + 14471.

It is an arithmetic number, because the mean of its divisors is an integer number (2287404).

Almost surely, 2^25401441 is an apocalyptic number.

It is an amenable number.

25401441 is a deficient number, since it is larger than the sum of its proper divisors (11197023).

25401441 is a wasteful number, since it uses less digits than its factorization.

25401441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 25401441 is about 5039.9842261658. The cubic root of 25401441 is about 293.9585646636.

Adding to 25401441 its reverse (14410452), we get a palindrome (39811893).

The spelling of 25401441 in words is "twenty-five million, four hundred one thousand, four hundred forty-one".