25276121 has 4 divisors (see below), whose sum is σ = 27220452. Its totient is φ = 23331792.

The previous prime is 25276109. The next prime is 25276133. The reversal of 25276121 is 12167252.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25276109) and next prime (25276133).

It can be written as a sum of positive squares in 2 ways, for example, as 7728400 + 17547721 = 2780^2 + 4189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25276121 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25276151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972146 + ... + 972171.

It is an arithmetic number, because the mean of its divisors is an integer number (6805113).

Almost surely, 2^25276121 is an apocalyptic number.

It is an amenable number.

25276121 is a deficient number, since it is larger than the sum of its proper divisors (1944331).

25276121 is a wasteful number, since it uses less digits than its factorization.

25276121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944330.

The product of its digits is 1680, while the sum is 26.

The square root of 25276121 is about 5027.5362753540. The cubic root of 25276121 is about 293.4743449372.

The spelling of 25276121 in words is "twenty-five million, two hundred seventy-six thousand, one hundred twenty-one".