25671425 has 12 divisors (see below), whose sum is σ = 34281660. Its totient is φ = 18957120.

The previous prime is 25671419. The next prime is 25671439. The reversal of 25671425 is 52417652.

It can be written as a sum of positive squares in 6 ways, for example, as 591361 + 25080064 = 769^2 + 5008^2 .

It is not a de Polignac number, because 25671425 - 2⁶ = 25671361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25671391 and 25671400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39170 + ... + 39819.

It is an arithmetic number, because the mean of its divisors is an integer number (2856805).

Almost surely, 2^25671425 is an apocalyptic number.

25671425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25671425 is a deficient number, since it is larger than the sum of its proper divisors (8610235).

25671425 is a wasteful number, since it uses less digits than its factorization.

25671425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79012 (or 79007 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 25671425 is about 5066.6976424492. The cubic root of 25671425 is about 294.9963611540.

The spelling of 25671425 in words is "twenty-five million, six hundred seventy-one thousand, four hundred twenty-five".