25631030 has 16 divisors (see below), whose sum is σ = 46769184. Its totient is φ = 10111680.

The previous prime is 25631029. The next prime is 25631033. The reversal of 25631030 is 3013652.

It is a junction number, because it is equal to n+sod(n) for n = 25630993 and 25631011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25631033) 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, 16826 + ... + 18285.

It is an arithmetic number, because the mean of its divisors is an integer number (2923074).

Almost surely, 2^25631030 is an apocalyptic number.

25631030 is a deficient number, since it is larger than the sum of its proper divisors (21138154).

25631030 is a wasteful number, since it uses less digits than its factorization.

25631030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35191.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 25631030 is about 5062.7097487413. The cubic root of 25631030 is about 294.8415504546.

Adding to 25631030 its reverse (3013652), we get a palindrome (28644682).

The spelling of 25631030 in words is "twenty-five million, six hundred thirty-one thousand, thirty".