25726397 has 8 divisors (see below), whose sum is σ = 26953344. Its totient is φ = 24508528.

The previous prime is 25726381. The next prime is 25726411. The reversal of 25726397 is 79362752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25726397 - 2⁴ = 25726381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25726367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3923 + ... + 8175.

It is an arithmetic number, because the mean of its divisors is an integer number (3369168).

Almost surely, 2^25726397 is an apocalyptic number.

It is an amenable number.

25726397 is a deficient number, since it is larger than the sum of its proper divisors (1226947).

25726397 is a wasteful number, since it uses less digits than its factorization.

25726397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539.

The product of its digits is 158760, while the sum is 41.

The square root of 25726397 is about 5072.1195766661. The cubic root of 25726397 is about 295.2067764116.

The spelling of 25726397 in words is "twenty-five million, seven hundred twenty-six thousand, three hundred ninety-seven".