25550345 has 16 divisors (see below), whose sum is σ = 32400000. Its totient is φ = 19289088.

The previous prime is 25550333. The next prime is 25550351. The reversal of 25550345 is 54305552.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25550345 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42356 + ... + 42954.

It is an arithmetic number, because the mean of its divisors is an integer number (2025000).

Almost surely, 2^25550345 is an apocalyptic number.

It is an amenable number.

25550345 is a deficient number, since it is larger than the sum of its proper divisors (6849655).

25550345 is a wasteful number, since it uses less digits than its factorization.

25550345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 25550345 is about 5054.7349089740. The cubic root of 25550345 is about 294.5318438648.

Adding to 25550345 its reverse (54305552), we get a palindrome (79855897).

The spelling of 25550345 in words is "twenty-five million, five hundred fifty thousand, three hundred forty-five".