25097775 has 12 divisors (see below), whose sum is σ = 41495112. Its totient is φ = 13385440.

The previous prime is 25097773. The next prime is 25097783. The reversal of 25097775 is 57779052.

It is not a de Polignac number, because 25097775 - 2¹ = 25097773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25097773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167244 + ... + 167393.

It is an arithmetic number, because the mean of its divisors is an integer number (3457926).

Almost surely, 2^25097775 is an apocalyptic number.

25097775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25097775 is a deficient number, since it is larger than the sum of its proper divisors (16397337).

25097775 is a wasteful number, since it uses less digits than its factorization.

25097775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334650 (or 334645 counting only the distinct ones).

The product of its (nonzero) digits is 154350, while the sum is 42.

The square root of 25097775 is about 5009.7679586983. The cubic root of 25097775 is about 292.7824723936.

The spelling of 25097775 in words is "twenty-five million, ninety-seven thousand, seven hundred seventy-five".