25356890 has 16 divisors (see below), whose sum is σ = 49153608. Its totient is φ = 9362496.

The previous prime is 25356883. The next prime is 25356893. The reversal of 25356890 is 9865352.

It can be written as a sum of positive squares in 4 ways, for example, as 10387729 + 14969161 = 3223^2 + 3869^2 .

It is not an unprimeable number, because it can be changed into a prime (25356893) 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, 97397 + ... + 97656.

Almost surely, 2^25356890 is an apocalyptic number.

25356890 is a deficient number, since it is larger than the sum of its proper divisors (23796718).

25356890 is a wasteful number, since it uses less digits than its factorization.

25356890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195073.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 25356890 is about 5035.5625306414. The cubic root of 25356890 is about 293.7866083846.

The spelling of 25356890 in words is "twenty-five million, three hundred fifty-six thousand, eight hundred ninety".