25044431 has 2 divisors, whose sum is σ = 25044432. Its totient is φ = 25044430.

The previous prime is 25044419. The next prime is 25044457. The reversal of 25044431 is 13444052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25044431 - 2¹⁰ = 25043407 is a prime.

It is a super-2 number, since 2×25044431² = 1254447048227522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25044397 and 25044406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25044731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12522215 + 12522216.

It is an arithmetic number, because the mean of its divisors is an integer number (12522216).

Almost surely, 2^25044431 is an apocalyptic number.

25044431 is a deficient number, since it is larger than the sum of its proper divisors (1).

25044431 is an equidigital number, since it uses as much as digits as its factorization.

25044431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 25044431 is about 5004.4411276385. The cubic root of 25044431 is about 292.5748940125.

Adding to 25044431 its reverse (13444052), we get a palindrome (38488483).

The spelling of 25044431 in words is "twenty-five million, forty-four thousand, four hundred thirty-one".