25130997 has 6 divisors (see below), whose sum is σ = 36300342. Its totient is φ = 16753992.

The previous prime is 25130993. The next prime is 25130999. The reversal of 25130997 is 79903152.

25130997 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in only one way, i.e., 20439441 + 4691556 = 4521^2 + 2166^2 .

It is not a de Polignac number, because 25130997 - 2² = 25130993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25130993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1396158 + ... + 1396175.

It is an arithmetic number, because the mean of its divisors is an integer number (6050057).

Almost surely, 2^25130997 is an apocalyptic number.

It is an amenable number.

25130997 is a deficient number, since it is larger than the sum of its proper divisors (11169345).

25130997 is a wasteful number, since it uses less digits than its factorization.

25130997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792339 (or 2792336 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 25130997 is about 5013.0825845980. The cubic root of 25130997 is about 292.9116011131.

The spelling of 25130997 in words is "twenty-five million, one hundred thirty thousand, nine hundred ninety-seven".