25225261 has 4 divisors (see below), whose sum is σ = 25345024. Its totient is φ = 25105500.

The previous prime is 25225243. The next prime is 25225267. The reversal of 25225261 is 16252252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25225261 - 2¹¹ = 25223213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25225267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59565 + ... + 59986.

It is an arithmetic number, because the mean of its divisors is an integer number (6336256).

Almost surely, 2^25225261 is an apocalyptic number.

It is an amenable number.

25225261 is a deficient number, since it is larger than the sum of its proper divisors (119763).

25225261 is a wasteful number, since it uses less digits than its factorization.

25225261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119762.

The product of its digits is 2400, while the sum is 25.

The square root of 25225261 is about 5022.4755848088. The cubic root of 25225261 is about 293.2773721012.

The spelling of 25225261 in words is "twenty-five million, two hundred twenty-five thousand, two hundred sixty-one".