25732031 has 4 divisors (see below), whose sum is σ = 27711432. Its totient is φ = 23752632.

The previous prime is 25732027. The next prime is 25732037. The reversal of 25732031 is 13023752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25732031 - 2² = 25732027 is a prime.

It is a super-2 number, since 2×25732031² = 1324274838769922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25731988 and 25732006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25732037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989681 + ... + 989706.

It is an arithmetic number, because the mean of its divisors is an integer number (6927858).

Almost surely, 2^25732031 is an apocalyptic number.

25732031 is a deficient number, since it is larger than the sum of its proper divisors (1979401).

25732031 is a wasteful number, since it uses less digits than its factorization.

25732031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979400.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 25732031 is about 5072.6749353768. The cubic root of 25732031 is about 295.2283246238.

Adding to 25732031 its reverse (13023752), we get a palindrome (38755783).

The spelling of 25732031 in words is "twenty-five million, seven hundred thirty-two thousand, thirty-one".