25536473 has 2 divisors, whose sum is σ = 25536474. Its totient is φ = 25536472.

The previous prime is 25536461. The next prime is 25536479. The reversal of 25536473 is 37463552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15976009 + 9560464 = 3997^2 + 3092^2 .

It is a cyclic number.

It is not a de Polignac number, because 25536473 - 2⁴ = 25536457 is a prime.

It is a super-2 number, since 2×25536473² = 1304222906559458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25536479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12768236 + 12768237.

It is an arithmetic number, because the mean of its divisors is an integer number (12768237).

Almost surely, 2^25536473 is an apocalyptic number.

It is an amenable number.

25536473 is a deficient number, since it is larger than the sum of its proper divisors (1).

25536473 is an equidigital number, since it uses as much as digits as its factorization.

25536473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 35.

The square root of 25536473 is about 5053.3625438909. The cubic root of 25536473 is about 294.4785310115.

The spelling of 25536473 in words is "twenty-five million, five hundred thirty-six thousand, four hundred seventy-three".