25625493 has 6 divisors (see below), whose sum is σ = 37014614. Its totient is φ = 17083656.

The previous prime is 25625491. The next prime is 25625513. The reversal of 25625493 is 39452652.

25625493 is a `hidden beast` number, since 2 + 562 + 5 + 4 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23794884 + 1830609 = 4878^2 + 1353^2 .

It is not a de Polignac number, because 25625493 - 2¹ = 25625491 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25625491) 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 5 ways as a sum of consecutive naturals, for example, 1423630 + ... + 1423647.

Almost surely, 2^25625493 is an apocalyptic number.

It is an amenable number.

25625493 is a deficient number, since it is larger than the sum of its proper divisors (11389121).

25625493 is a wasteful number, since it uses less digits than its factorization.

25625493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847283 (or 2847280 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 25625493 is about 5062.1628776641. The cubic root of 25625493 is about 294.8203176594.

The spelling of 25625493 in words is "twenty-five million, six hundred twenty-five thousand, four hundred ninety-three".