25560431 has 8 divisors (see below), whose sum is σ = 27859440. Its totient is φ = 23308992.

The previous prime is 25560389. The next prime is 25560463. The reversal of 25560431 is 13406552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25560431 is a prime.

It is a super-2 number, since 2×25560431² = 1306671265811522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25560431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25560331) 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, 10766 + ... + 12923.

It is an arithmetic number, because the mean of its divisors is an integer number (3482430).

Almost surely, 2^25560431 is an apocalyptic number.

25560431 is a deficient number, since it is larger than the sum of its proper divisors (2299009).

25560431 is a wasteful number, since it uses less digits than its factorization.

25560431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23785.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 25560431 is about 5055.7324889674. The cubic root of 25560431 is about 294.5705942532.

Adding to 25560431 its reverse (13406552), we get a palindrome (38966983).

The spelling of 25560431 in words is "twenty-five million, five hundred sixty thousand, four hundred thirty-one".