25053531 has 4 divisors (see below), whose sum is σ = 33404712. Its totient is φ = 16702352.

The previous prime is 25053517. The next prime is 25053559. The reversal of 25053531 is 13535052.

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

It is a cyclic number.

It is not a de Polignac number, because 25053531 - 2¹⁵ = 25020763 is a prime.

It is a super-2 number, since 2×25053531² = 1255358831135922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25053031) 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, 4175586 + ... + 4175591.

It is an arithmetic number, because the mean of its divisors is an integer number (8351178).

Almost surely, 2^25053531 is an apocalyptic number.

25053531 is a deficient number, since it is larger than the sum of its proper divisors (8351181).

25053531 is an equidigital number, since it uses as much as digits as its factorization.

25053531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351180.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 25053531 is about 5005.3502374959. The cubic root of 25053531 is about 292.6103258301.

Adding to 25053531 its reverse (13535052), we get a palindrome (38588583).

The spelling of 25053531 in words is "twenty-five million, fifty-three thousand, five hundred thirty-one".