25672505 has 16 divisors (see below), whose sum is σ = 31874304. Its totient is φ = 19837440.

The previous prime is 25672469. The next prime is 25672523. The reversal of 25672505 is 50527652.

It is not a de Polignac number, because 25672505 - 2¹⁶ = 25606969 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

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, 20240 + ... + 21470.

It is an arithmetic number, because the mean of its divisors is an integer number (1992144).

Almost surely, 2^25672505 is an apocalyptic number.

It is an amenable number.

25672505 is a deficient number, since it is larger than the sum of its proper divisors (6201799).

25672505 is a wasteful number, since it uses less digits than its factorization.

25672505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 25672505 is about 5066.8042196240. The cubic root of 25672505 is about 295.0004979404. Note that the first 3 decimals are identical.

The spelling of 25672505 in words is "twenty-five million, six hundred seventy-two thousand, five hundred five".