25887970 has 16 divisors (see below), whose sum is σ = 46659960. Its totient is φ = 10341504.

The previous prime is 25887947. The next prime is 25887971. The reversal of 25887970 is 7978852.

It can be written as a sum of positive squares in 4 ways, for example, as 12131289 + 13756681 = 3483^2 + 3709^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25887970.

It is not an unprimeable number, because it can be changed into a prime (25887971) 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, 10144 + ... + 12436.

Almost surely, 2^25887970 is an apocalyptic number.

25887970 is a deficient number, since it is larger than the sum of its proper divisors (20771990).

25887970 is a wasteful number, since it uses less digits than its factorization.

25887970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 25887970 is about 5088.0222090710. The cubic root of 25887970 is about 295.8234962454.

The spelling of 25887970 in words is "twenty-five million, eight hundred eighty-seven thousand, nine hundred seventy".