25521675 has 48 divisors (see below), whose sum is σ = 45970272. Its totient is φ = 12441600.

The previous prime is 25521667. The next prime is 25521677. The reversal of 25521675 is 57612552.

It is not a de Polignac number, because 25521675 - 2³ = 25521667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25521677) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46905 + ... + 47445.

It is an arithmetic number, because the mean of its divisors is an integer number (957714).

Almost surely, 2^25521675 is an apocalyptic number.

25521675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25521675 is a deficient number, since it is larger than the sum of its proper divisors (20448597).

25521675 is a wasteful number, since it uses less digits than its factorization.

25521675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 603 counting only the distinct ones).

The product of its digits is 21000, while the sum is 33.

The square root of 25521675 is about 5051.8981581184. The cubic root of 25521675 is about 294.4216380685.

The spelling of 25521675 in words is "twenty-five million, five hundred twenty-one thousand, six hundred seventy-five".