25487690 has 8 divisors (see below), whose sum is σ = 45877860. Its totient is φ = 10195072.

The previous prime is 25487681. The next prime is 25487713. The reversal of 25487690 is 9678452.

It can be written as a sum of positive squares in 2 ways, for example, as 24810361 + 677329 = 4981^2 + 823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25487690² = 1299244683072200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274375 + ... + 1274394.

Almost surely, 2^25487690 is an apocalyptic number.

25487690 is a deficient number, since it is larger than the sum of its proper divisors (20390170).

25487690 is a wasteful number, since it uses less digits than its factorization.

25487690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548776.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 25487690 is about 5048.5334504190. The cubic root of 25487690 is about 294.2908947690.

The spelling of 25487690 in words is "twenty-five million, four hundred eighty-seven thousand, six hundred ninety".