25003231 has 16 divisors (see below), whose sum is σ = 29242368. Its totient is φ = 21146400.

The previous prime is 25003217. The next prime is 25003247. The reversal of 25003231 is 13230052.

25003231 = T₁₄₆₃ + T₁₄₆₄ + ... + T₁₄₈₅.

It is not a de Polignac number, because 25003231 - 2¹⁹ = 24478943 is a prime.

It is a super-2 number, since 2×25003231² = 1250323120878722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25003331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8026 + ... + 10696.

It is an arithmetic number, because the mean of its divisors is an integer number (1827648).

Almost surely, 2^25003231 is an apocalyptic number.

25003231 is a deficient number, since it is larger than the sum of its proper divisors (4239137).

25003231 is a wasteful number, since it uses less digits than its factorization.

25003231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 25003231 is about 5000.3230895613. The cubic root of 25003231 is about 292.4143699471.

Adding to 25003231 its reverse (13230052), we get a palindrome (38233283).

The spelling of 25003231 in words is "twenty-five million, three thousand, two hundred thirty-one".