25031121 has 8 divisors (see below), whose sum is σ = 33845184. Its totient is φ = 16452240.

The previous prime is 25031101. The next prime is 25031131. The reversal of 25031121 is 12113052.

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

It is not a de Polignac number, because 25031121 - 2¹⁰ = 25030097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25031121.

It is not an unprimeable number, because it can be changed into a prime (25031101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58546 + ... + 58971.

It is an arithmetic number, because the mean of its divisors is an integer number (4230648).

Almost surely, 2^25031121 is an apocalyptic number.

It is an amenable number.

25031121 is a deficient number, since it is larger than the sum of its proper divisors (8814063).

25031121 is a wasteful number, since it uses less digits than its factorization.

25031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117591.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 25031121 is about 5003.1111320857. Note that the first 4 decimals coincide. The cubic root of 25031121 is about 292.5230546515.

Adding to 25031121 its reverse (12113052), we get a palindrome (37144173).

It can be divided in two parts, 25031 and 121, that added together give a palindrome (25152).

The spelling of 25031121 in words is "twenty-five million, thirty-one thousand, one hundred twenty-one".