25645010 has 32 divisors (see below), whose sum is σ = 49697712. Its totient is φ = 9492480.

The previous prime is 25645007. The next prime is 25645013. The reversal of 25645010 is 1054652.

It is an interprime number because it is at equal distance from previous prime (25645007) and next prime (25645013).

It can be written as a sum of positive squares in 8 ways, for example, as 10349089 + 15295921 = 3217^2 + 3911^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25645013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9134 + ... + 11606.

Almost surely, 2^25645010 is an apocalyptic number.

25645010 is a deficient number, since it is larger than the sum of its proper divisors (24052702).

25645010 is a wasteful number, since it uses less digits than its factorization.

25645010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 25645010 is about 5064.0902440616. The cubic root of 25645010 is about 294.8951461119.

Adding to 25645010 its reverse (1054652), we get a palindrome (26699662).

The spelling of 25645010 in words is "twenty-five million, six hundred forty-five thousand, ten".