25625601 has 6 divisors (see below), whose sum is σ = 37014770. Its totient is φ = 17083728.

The previous prime is 25625581. The next prime is 25625617. The reversal of 25625601 is 10652652.

25625601 is a `hidden beast` number, since 2 + 56 + 2 + 5 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16769025 + 8856576 = 4095^2 + 2976^2 .

It is not a de Polignac number, because 25625601 - 2¹⁹ = 25101313 is a prime.

It is a super-2 number, since 2×25625601² = 1313342853222402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25625641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1423636 + ... + 1423653.

Almost surely, 2^25625601 is an apocalyptic number.

It is an amenable number.

25625601 is a deficient number, since it is larger than the sum of its proper divisors (11389169).

25625601 is a wasteful number, since it uses less digits than its factorization.

25625601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847295 (or 2847292 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 25625601 is about 5062.1735450298. The cubic root of 25625601 is about 294.8207318374.

The spelling of 25625601 in words is "twenty-five million, six hundred twenty-five thousand, six hundred one".