25437487 has 4 divisors (see below), whose sum is σ = 25544160. Its totient is φ = 25330816.

The previous prime is 25437469. The next prime is 25437493. The reversal of 25437487 is 78473452.

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 25437487 - 2⁷ = 25437359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25437407) 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, 52978 + ... + 53455.

It is an arithmetic number, because the mean of its divisors is an integer number (6386040).

Almost surely, 2^25437487 is an apocalyptic number.

25437487 is a deficient number, since it is larger than the sum of its proper divisors (106673).

25437487 is a wasteful number, since it uses less digits than its factorization.

25437487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106672.

The product of its digits is 188160, while the sum is 40.

The square root of 25437487 is about 5043.5589616857. The cubic root of 25437487 is about 294.0975465722.

The spelling of 25437487 in words is "twenty-five million, four hundred thirty-seven thousand, four hundred eighty-seven".