25531653 has 16 divisors (see below), whose sum is σ = 39075840. Its totient is φ = 14525616.

The previous prime is 25531651. The next prime is 25531657. The reversal of 25531653 is 35613552.

It is not a de Polignac number, because 25531653 - 2¹ = 25531651 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25531653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25531651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2476 + ... + 7562.

It is an arithmetic number, because the mean of its divisors is an integer number (2442240).

Almost surely, 2^25531653 is an apocalyptic number.

It is an amenable number.

25531653 is a deficient number, since it is larger than the sum of its proper divisors (13544187).

25531653 is a wasteful number, since it uses less digits than its factorization.

25531653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5336.

The product of its digits is 13500, while the sum is 30.

The square root of 25531653 is about 5052.8856112127. The cubic root of 25531653 is about 294.4600022738.

The spelling of 25531653 in words is "twenty-five million, five hundred thirty-one thousand, six hundred fifty-three".