25381071 has 6 divisors (see below), whose sum is σ = 36661560. Its totient is φ = 16920708.

The previous prime is 25381067. The next prime is 25381073. The reversal of 25381071 is 17018352.

It is not a de Polignac number, because 25381071 - 2² = 25381067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25381073) 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, 1410051 + ... + 1410068.

It is an arithmetic number, because the mean of its divisors is an integer number (6110260).

Almost surely, 2^25381071 is an apocalyptic number.

25381071 is a deficient number, since it is larger than the sum of its proper divisors (11280489).

25381071 is a wasteful number, since it uses less digits than its factorization.

25381071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820125 (or 2820122 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 25381071 is about 5037.9629812058. The cubic root of 25381071 is about 293.8799662710.

The spelling of 25381071 in words is "twenty-five million, three hundred eighty-one thousand, seventy-one".