25973397 has 6 divisors (see below), whose sum is σ = 37517142. Its totient is φ = 17315592.

The previous prime is 25973351. The next prime is 25973461. The reversal of 25973397 is 79337952.

25973397 is a `hidden beast` number, since 259 + 7 + 3 + 397 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16573041 + 9400356 = 4071^2 + 3066^2 .

It is not a de Polignac number, because 25973397 - 2¹⁸ = 25711253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25973317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1442958 + ... + 1442975.

It is an arithmetic number, because the mean of its divisors is an integer number (6252857).

Almost surely, 2^25973397 is an apocalyptic number.

It is an amenable number.

25973397 is a deficient number, since it is larger than the sum of its proper divisors (11543745).

25973397 is a wasteful number, since it uses less digits than its factorization.

25973397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885939 (or 2885936 counting only the distinct ones).

The product of its digits is 357210, while the sum is 45.

The square root of 25973397 is about 5096.4102071949. The cubic root of 25973397 is about 296.1485322537.

The spelling of 25973397 in words is "twenty-five million, nine hundred seventy-three thousand, three hundred ninety-seven".