25870651 has 4 divisors (see below), whose sum is σ = 27392472. Its totient is φ = 24348832.

The previous prime is 25870619. The next prime is 25870657. The reversal of 25870651 is 15607852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25870651 - 2⁵ = 25870619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25870657) 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, 760885 + ... + 760918.

It is an arithmetic number, because the mean of its divisors is an integer number (6848118).

Almost surely, 2^25870651 is an apocalyptic number.

25870651 is a deficient number, since it is larger than the sum of its proper divisors (1521821).

25870651 is a wasteful number, since it uses less digits than its factorization.

25870651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521820.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 25870651 is about 5086.3199860017. The cubic root of 25870651 is about 295.7575130872.

The spelling of 25870651 in words is "twenty-five million, eight hundred seventy thousand, six hundred fifty-one".