25498537 has 4 divisors (see below), whose sum is σ = 25508736. Its totient is φ = 25488340.

The previous prime is 25498507. The next prime is 25498547. The reversal of 25498537 is 73589452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25498537 - 2⁷ = 25498409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25498493 and 25498502.

It is not an unprimeable number, because it can be changed into a prime (25498507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488 + ... + 7294.

It is an arithmetic number, because the mean of its divisors is an integer number (6377184).

Almost surely, 2^25498537 is an apocalyptic number.

It is an amenable number.

25498537 is a deficient number, since it is larger than the sum of its proper divisors (10199).

25498537 is an equidigital number, since it uses as much as digits as its factorization.

25498537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10198.

The product of its digits is 302400, while the sum is 43.

The square root of 25498537 is about 5049.6076085177. The cubic root of 25498537 is about 294.3326367577.

The spelling of 25498537 in words is "twenty-five million, four hundred ninety-eight thousand, five hundred thirty-seven".