25121245 has 16 divisors (see below), whose sum is σ = 31027392. Its totient is φ = 19514880.

The previous prime is 25121237. The next prime is 25121263. The reversal of 25121245 is 54212152.

It is not a de Polignac number, because 25121245 - 2³ = 25121237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70989 + ... + 71341.

It is an arithmetic number, because the mean of its divisors is an integer number (1939212).

Almost surely, 2^25121245 is an apocalyptic number.

It is an amenable number.

25121245 is a deficient number, since it is larger than the sum of its proper divisors (5906147).

25121245 is a wasteful number, since it uses less digits than its factorization.

25121245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732.

The product of its digits is 800, while the sum is 22.

The square root of 25121245 is about 5012.1098351892. The cubic root of 25121245 is about 292.8737084196.

Adding to 25121245 its reverse (54212152), we get a palindrome (79333397).

The spelling of 25121245 in words is "twenty-five million, one hundred twenty-one thousand, two hundred forty-five".