25672869 has 20 divisors (see below), whose sum is σ = 38623200. Its totient is φ = 16993800.

The previous prime is 25672861. The next prime is 25672877. The reversal of 25672869 is 96827652.

25672869 is a `hidden beast` number, since 2 + 567 + 2 + 86 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (25672861) and next prime (25672877).

It is not a de Polignac number, because 25672869 - 2³ = 25672861 is a prime.

It is a super-2 number, since 2×25672869² = 1318192405382322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25672861) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11182 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (1931160).

Almost surely, 2^25672869 is an apocalyptic number.

It is an amenable number.

25672869 is a deficient number, since it is larger than the sum of its proper divisors (12950331).

25672869 is a wasteful number, since it uses less digits than its factorization.

25672869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262 (or 2253 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 25672869 is about 5066.8401395742. The cubic root of 25672869 is about 295.0018921644.

The spelling of 25672869 in words is "twenty-five million, six hundred seventy-two thousand, eight hundred sixty-nine".