25427031 has 12 divisors (see below), whose sum is σ = 39438072. Its totient is φ = 14529648.

The previous prime is 25426991. The next prime is 25427069. The reversal of 25427031 is 13072452.

It is not a de Polignac number, because 25427031 - 2¹³ = 25418839 is a prime.

It is a super-2 number, since 2×25427031² = 1293067810949922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25426992 and 25427010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25427071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86340 + ... + 86633.

It is an arithmetic number, because the mean of its divisors is an integer number (3286506).

Almost surely, 2^25427031 is an apocalyptic number.

25427031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25427031 is a deficient number, since it is larger than the sum of its proper divisors (14011041).

25427031 is a wasteful number, since it uses less digits than its factorization.

25427031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172990 (or 172983 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 25427031 is about 5042.5222855234. The cubic root of 25427031 is about 294.0572450888.

Adding to 25427031 its reverse (13072452), we get a palindrome (38499483).

The spelling of 25427031 in words is "twenty-five million, four hundred twenty-seven thousand, thirty-one".