25420036 has 12 divisors (see below), whose sum is σ = 45687628. Its totient is φ = 12366432.

The previous prime is 25420033. The next prime is 25420039. The reversal of 25420036 is 63002452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25420033) and next prime (25420039).

It can be written as a sum of positive squares in 2 ways, for example, as 24304900 + 1115136 = 4930^2 + 1056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25419989 and 25420016.

It is not an unprimeable number, because it can be changed into a prime (25420033) 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, 85731 + ... + 86026.

Almost surely, 2^25420036 is an apocalyptic number.

It is an amenable number.

25420036 is a deficient number, since it is larger than the sum of its proper divisors (20267592).

25420036 is a wasteful number, since it uses less digits than its factorization.

25420036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171798 (or 171796 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 25420036 is about 5041.8286365167. The cubic root of 25420036 is about 294.0302774747.

Adding to 25420036 its reverse (63002452), we get a palindrome (88422488).

The spelling of 25420036 in words is "twenty-five million, four hundred twenty thousand, thirty-six".