25481651 has 6 divisors (see below), whose sum is σ = 27592740. Its totient is φ = 23521368.

The previous prime is 25481647. The next prime is 25481681. The reversal of 25481651 is 15618452.

It is not a de Polignac number, because 25481651 - 2² = 25481647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25481611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75221 + ... + 75558.

It is an arithmetic number, because the mean of its divisors is an integer number (4598790).

Almost surely, 2^25481651 is an apocalyptic number.

25481651 is a deficient number, since it is larger than the sum of its proper divisors (2111089).

25481651 is a wasteful number, since it uses less digits than its factorization.

25481651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150805 (or 150792 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 25481651 is about 5047.9353205048. The cubic root of 25481651 is about 294.2676500432.

The spelling of 25481651 in words is "twenty-five million, four hundred eighty-one thousand, six hundred fifty-one".