25173045 has 32 divisors (see below), whose sum is σ = 44985600. Its totient is φ = 13355712.

The previous prime is 25173037. The next prime is 25173047. The reversal of 25173045 is 54037152.

It is a happy number.

It is not a de Polignac number, because 25173045 - 2³ = 25173037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25173047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35151 + ... + 35859.

It is an arithmetic number, because the mean of its divisors is an integer number (1405800).

Almost surely, 2^25173045 is an apocalyptic number.

It is an amenable number.

25173045 is a deficient number, since it is larger than the sum of its proper divisors (19812555).

25173045 is a wasteful number, since it uses less digits than its factorization.

25173045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 25173045 is about 5017.2746586170. The cubic root of 25173045 is about 293.0748720508.

The spelling of 25173045 in words is "twenty-five million, one hundred seventy-three thousand, forty-five".