25313553 has 24 divisors (see below), whose sum is σ = 38464608. Its totient is φ = 16632864.

The previous prime is 25313551. The next prime is 25313569. The reversal of 25313553 is 35531352.

It is not a de Polignac number, because 25313553 - 2¹ = 25313551 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25313551) 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 23 ways as a sum of consecutive naturals, for example, 17026 + ... + 18452.

It is an arithmetic number, because the mean of its divisors is an integer number (1602692).

Almost surely, 2^25313553 is an apocalyptic number.

It is an amenable number.

25313553 is a deficient number, since it is larger than the sum of its proper divisors (13151055).

25313553 is an equidigital number, since it uses as much as digits as its factorization.

25313553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515 (or 1503 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 25313553 is about 5031.2575962676. The cubic root of 25313553 is about 293.6191444936.

It can be divided in two parts, 2531 and 3553, that added together give a square (6084 = 78²).

The spelling of 25313553 in words is "twenty-five million, three hundred thirteen thousand, five hundred fifty-three".