25726431 has 8 divisors (see below), whose sum is σ = 34715520. Its totient is φ = 16944152.

The previous prime is 25726411. The next prime is 25726447. The reversal of 25726431 is 13462752.

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 25726431 - 2⁶ = 25726367 is a prime.

It is a super-2 number, since 2×25726431² = 1323698503995522, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25726411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51411 + ... + 51908.

It is an arithmetic number, because the mean of its divisors is an integer number (4339440).

Almost surely, 2^25726431 is an apocalyptic number.

25726431 is a deficient number, since it is larger than the sum of its proper divisors (8989089).

25726431 is a wasteful number, since it uses less digits than its factorization.

25726431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103405.

The product of its digits is 10080, while the sum is 30.

The square root of 25726431 is about 5072.1229283210. The cubic root of 25726431 is about 295.2069064600.

The spelling of 25726431 in words is "twenty-five million, seven hundred twenty-six thousand, four hundred thirty-one".