25780036 has 12 divisors (see below), whose sum is σ = 47489680. Its totient is φ = 12211560.

The previous prime is 25780031. The next prime is 25780037. The reversal of 25780036 is 63008752.

It is a super-2 number, since 2×25780036² = 1329220512322592, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25780031) 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, 169530 + ... + 169681.

Almost surely, 2^25780036 is an apocalyptic number.

It is an amenable number.

25780036 is a deficient number, since it is larger than the sum of its proper divisors (21709644).

25780036 is a wasteful number, since it uses less digits than its factorization.

25780036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339234 (or 339232 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 25780036 is about 5077.4044550341. The cubic root of 25780036 is about 295.4118006399.

Adding to 25780036 its reverse (63008752), we get a palindrome (88788788).

The spelling of 25780036 in words is "twenty-five million, seven hundred eighty thousand, thirty-six".