25550497 has 12 divisors (see below), whose sum is σ = 30821376. Its totient is φ = 20745720.

The previous prime is 25550491. The next prime is 25550501. The reversal of 25550497 is 79405552.

It is a de Polignac number, because none of the positive numbers 2^k-25550497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25550491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2529 + ... + 7582.

It is an arithmetic number, because the mean of its divisors is an integer number (2568448).

Almost surely, 2^25550497 is an apocalyptic number.

It is an amenable number.

25550497 is a deficient number, since it is larger than the sum of its proper divisors (5270879).

25550497 is a wasteful number, since it uses less digits than its factorization.

25550497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10156 (or 10137 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 25550497 is about 5054.7499443593. The cubic root of 25550497 is about 294.5324279241.

The spelling of 25550497 in words is "twenty-five million, five hundred fifty thousand, four hundred ninety-seven".