25136473 has 2 divisors, whose sum is σ = 25136474. Its totient is φ = 25136472.

The previous prime is 25136459. The next prime is 25136491. The reversal of 25136473 is 37463152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24970009 + 166464 = 4997^2 + 408^2 .

It is a cyclic number.

It is not a de Polignac number, because 25136473 - 2⁹ = 25135961 is a prime.

It is not a weakly prime, because it can be changed into another prime (25136413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12568236 + 12568237.

It is an arithmetic number, because the mean of its divisors is an integer number (12568237).

Almost surely, 2^25136473 is an apocalyptic number.

It is an amenable number.

25136473 is a deficient number, since it is larger than the sum of its proper divisors (1).

25136473 is an equidigital number, since it uses as much as digits as its factorization.

25136473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 25136473 is about 5013.6287257834. The cubic root of 25136473 is about 292.9328745420.

The spelling of 25136473 in words is "twenty-five million, one hundred thirty-six thousand, four hundred seventy-three".