25672647 has 64 divisors (see below), whose sum is σ = 46964736. Its totient is φ = 12044160.

The previous prime is 25672613. The next prime is 25672649. The reversal of 25672647 is 74627652.

It is a happy number.

It is not a de Polignac number, because 25672647 - 2¹⁰ = 25671623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25672649) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 249198 + ... + 249300.

It is an arithmetic number, because the mean of its divisors is an integer number (733824).

Almost surely, 2^25672647 is an apocalyptic number.

25672647 is a deficient number, since it is larger than the sum of its proper divisors (21292089).

25672647 is a wasteful number, since it uses less digits than its factorization.

25672647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220.

The product of its digits is 141120, while the sum is 39.

The square root of 25672647 is about 5066.8182323821. The cubic root of 25672647 is about 295.0010418425.

The spelling of 25672647 in words is "twenty-five million, six hundred seventy-two thousand, six hundred forty-seven".