25497653 has 2 divisors, whose sum is σ = 25497654. Its totient is φ = 25497652.

The previous prime is 25497643. The next prime is 25497673. The reversal of 25497653 is 35679452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24820324 + 677329 = 4982^2 + 823^2 .

It is a cyclic number.

It is not a de Polignac number, because 25497653 - 2⁸ = 25497397 is a prime.

It is a super-3 number, since 3×25497653³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25497653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25497643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12748826 + 12748827.

It is an arithmetic number, because the mean of its divisors is an integer number (12748827).

Almost surely, 2^25497653 is an apocalyptic number.

It is an amenable number.

25497653 is a deficient number, since it is larger than the sum of its proper divisors (1).

25497653 is an equidigital number, since it uses as much as digits as its factorization.

25497653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 41.

The square root of 25497653 is about 5049.5200762053. The cubic root of 25497653 is about 294.3292353461.

The spelling of 25497653 in words is "twenty-five million, four hundred ninety-seven thousand, six hundred fifty-three".