25934778 has 24 divisors (see below), whose sum is σ = 56826900. Its totient is φ = 8547264.

The previous prime is 25934771. The next prime is 25934813. The reversal of 25934778 is 87743952.

It can be written as a sum of positive squares in 2 ways, for example, as 25130169 + 804609 = 5013^2 + 897^2 .

It is a super-2 number, since 2×25934778² = 1345225419818568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25934771) 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, 6493 + ... + 9696.

Almost surely, 2^25934778 is an apocalyptic number.

25934778 is an abundant number, since it is smaller than the sum of its proper divisors (30892122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25934778 is a wasteful number, since it uses less digits than its factorization.

25934778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16286 (or 16283 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 25934778 is about 5092.6199544046. The cubic root of 25934778 is about 296.0016815707.

The spelling of 25934778 in words is "twenty-five million, nine hundred thirty-four thousand, seven hundred seventy-eight".