25053121 has 6 divisors (see below), whose sum is σ = 26613830. Its totient is φ = 23579136.

The previous prime is 25053113. The next prime is 25053143. The reversal of 25053121 is 12135052.

It can be written as a sum of positive squares in 3 ways, for example, as 4223025 + 20830096 = 2055^2 + 4564^2 .

It is not a de Polignac number, because 25053121 - 2³ = 25053113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25053101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43056 + ... + 43633.

Almost surely, 2^25053121 is an apocalyptic number.

It is an amenable number.

25053121 is a deficient number, since it is larger than the sum of its proper divisors (1560709).

25053121 is an equidigital number, since it uses as much as digits as its factorization.

25053121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86723 (or 86706 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 25053121 is about 5005.3092811534. The cubic root of 25053121 is about 292.6087296361.

Adding to 25053121 its reverse (12135052), we get a palindrome (37188173).

The spelling of 25053121 in words is "twenty-five million, fifty-three thousand, one hundred twenty-one".