25097975 has 24 divisors (see below), whose sum is σ = 35816160. Its totient is φ = 17089920.

The previous prime is 25097971. The next prime is 25097987. The reversal of 25097975 is 57979052.

It is not a de Polignac number, because 25097975 - 2² = 25097971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25097971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29861 + ... + 30689.

It is an arithmetic number, because the mean of its divisors is an integer number (1492340).

Almost surely, 2^25097975 is an apocalyptic number.

25097975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25097975 is a deficient number, since it is larger than the sum of its proper divisors (10718185).

25097975 is a wasteful number, since it uses less digits than its factorization.

25097975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 44.

The square root of 25097975 is about 5009.7879196629. The cubic root of 25097975 is about 292.7832501031.

The spelling of 25097975 in words is "twenty-five million, ninety-seven thousand, nine hundred seventy-five".