25131673 has 4 divisors (see below), whose sum is σ = 28721920. Its totient is φ = 21541428.

The previous prime is 25131671. The next prime is 25131677. The reversal of 25131673 is 37613152.

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.

It is a cyclic number.

It is not a de Polignac number, because 25131673 - 2¹ = 25131671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25131671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1795113 + ... + 1795126.

It is an arithmetic number, because the mean of its divisors is an integer number (7180480).

Almost surely, 2^25131673 is an apocalyptic number.

It is an amenable number.

25131673 is a deficient number, since it is larger than the sum of its proper divisors (3590247).

25131673 is an equidigital number, since it uses as much as digits as its factorization.

25131673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590246.

The product of its digits is 3780, while the sum is 28.

The square root of 25131673 is about 5013.1500077297. The cubic root of 25131673 is about 292.9142274377.

It can be divided in two parts, 2513 and 1673, that added together give a triangular number (4186 = T₉₁).

The spelling of 25131673 in words is "twenty-five million, one hundred thirty-one thousand, six hundred seventy-three".