25402065 has 16 divisors (see below), whose sum is σ = 43770048. Its totient is φ = 12505536.

The previous prime is 25402033. The next prime is 25402073. The reversal of 25402065 is 56020452.

It is not a de Polignac number, because 25402065 - 2⁵ = 25402033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64939 + ... + 65328.

It is an arithmetic number, because the mean of its divisors is an integer number (2735628).

Almost surely, 2^25402065 is an apocalyptic number.

It is an amenable number.

25402065 is a deficient number, since it is larger than the sum of its proper divisors (18367983).

25402065 is a wasteful number, since it uses less digits than its factorization.

25402065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130288.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 25402065 is about 5040.0461307413. The cubic root of 25402065 is about 293.9609717270.

The spelling of 25402065 in words is "twenty-five million, four hundred two thousand, sixty-five".