25045905 has 8 divisors (see below), whose sum is σ = 40073472. Its totient is φ = 13357808.

The previous prime is 25045903. The next prime is 25045921. The reversal of 25045905 is 50954052.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25045905 - 2¹ = 25045903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25045901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834849 + ... + 834878.

It is an arithmetic number, because the mean of its divisors is an integer number (5009184).

Almost surely, 2^25045905 is an apocalyptic number.

It is an amenable number.

25045905 is a deficient number, since it is larger than the sum of its proper divisors (15027567).

25045905 is a wasteful number, since it uses less digits than its factorization.

25045905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669735.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 25045905 is about 5004.5883946634. The cubic root of 25045905 is about 292.5806337707.

Adding to 25045905 its reverse (50954052), we get a palindrome (75999957).

The spelling of 25045905 in words is "twenty-five million, forty-five thousand, nine hundred five".