25111401 has 16 divisors (see below), whose sum is σ = 38728704. Its totient is φ = 14175504.

The previous prime is 25111381. The next prime is 25111409. The reversal of 25111401 is 10411152.

It is a happy number.

It is not a de Polignac number, because 25111401 - 2⁶ = 25111337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25111409) 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, 5461 + ... + 8946.

It is an arithmetic number, because the mean of its divisors is an integer number (2420544).

Almost surely, 2^25111401 is an apocalyptic number.

25111401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25111401 is a deficient number, since it is larger than the sum of its proper divisors (13617303).

25111401 is a wasteful number, since it uses less digits than its factorization.

25111401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14500.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 25111401 is about 5011.1277173906. The cubic root of 25111401 is about 292.8354483009.

Adding to 25111401 its reverse (10411152), we get a palindrome (35522553).

The spelling of 25111401 in words is "twenty-five million, one hundred eleven thousand, four hundred one".