25610525 has 6 divisors (see below), whose sum is σ = 31757082. Its totient is φ = 20488400.

The previous prime is 25610491. The next prime is 25610561. The reversal of 25610525 is 52501652.

It can be written as a sum of positive squares in 3 ways, for example, as 3076516 + 22534009 = 1754^2 + 4747^2 .

It is not a de Polignac number, because 25610525 - 2¹⁶ = 25544989 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25610494 and 25610503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512186 + ... + 512235.

It is an arithmetic number, because the mean of its divisors is an integer number (5292847).

Almost surely, 2^25610525 is an apocalyptic number.

25610525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25610525 is a deficient number, since it is larger than the sum of its proper divisors (6146557).

25610525 is a wasteful number, since it uses less digits than its factorization.

25610525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024431 (or 1024426 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 25610525 is about 5060.6842422740. The cubic root of 25610525 is about 294.7629043901.

The spelling of 25610525 in words is "twenty-five million, six hundred ten thousand, five hundred twenty-five".